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Finding the Fourth Proportional to 611,725.20, 917,587.80 and 611,725.20

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Solution

The fourth proportional to 611,725.20, 917,587.80 and 611,725.20 is: 917,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,725.20 : 917,587.80 = 611,725.20 : x
  2. Step 2: Convert to fraction form
    611,725.20/917,587.80 = 611,725.20/x
  3. Step 3: Cross multiply
    611,725.20x = 917,587.80 × 611,725.20
  4. Step 4: Simplify right side
    611,725.20x = 561,311,580,472.56
  5. Step 5: Solve for x
    x = 561,311,580,472.56/611,725.20
  6. Step 6: Final answer
    x = 917,587.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.