Home / 1,201,385,815.13-1,657,912,185.52-665,572,298.18

Finding the Fourth Proportional to 1,201,385,815.13, 1,657,912,185.52 and 665,572,298.18

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Solution

The fourth proportional to 1,201,385,815.13, 1,657,912,185.52 and 665,572,298.18 is: 918,489,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201,385,815.13 : 1,657,912,185.52 = 665,572,298.18 : x
  2. Step 2: Convert to fraction form
    1,201,385,815.13/1,657,912,185.52 = 665,572,298.18/x
  3. Step 3: Cross multiply
    1,201,385,815.13x = 1,657,912,185.52 × 665,572,298.18
  4. Step 4: Simplify right side
    1,201,385,815.13x = 1,103,460,423,487,219,328
  5. Step 5: Solve for x
    x = 1,103,460,423,487,219,328/1,201,385,815.13
  6. Step 6: Final answer
    x = 918,489,638.87

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Double scale
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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.