Home / 1,201,625,124.72-1,658,220,724.20-665,774,835.24

Finding the Fourth Proportional to 1,201,625,124.72, 1,658,220,724.20 and 665,774,835.24

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Solution

The fourth proportional to 1,201,625,124.72, 1,658,220,724.20 and 665,774,835.24 is: 918,757,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201,625,124.72 : 1,658,220,724.20 = 665,774,835.24 : x
  2. Step 2: Convert to fraction form
    1,201,625,124.72/1,658,220,724.20 = 665,774,835.24/x
  3. Step 3: Cross multiply
    1,201,625,124.72x = 1,658,220,724.20 × 665,774,835.24
  4. Step 4: Simplify right side
    1,201,625,124.72x = 1,104,001,629,445,808,512
  5. Step 5: Solve for x
    x = 1,104,001,629,445,808,512/1,201,625,124.72
  6. Step 6: Final answer
    x = 918,757,112.13

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Double scale
Find fourth proportional to 1,201,625,125.72, 1,658,220,725.58 and 665,774,836.24
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.