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Finding the Fourth Proportional to 508,918.80, 711,553.20 and 508,918.80

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Solution

The fourth proportional to 508,918.80, 711,553.20 and 508,918.80 is: 711,553.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,918.80 : 711,553.20 = 508,918.80 : x
  2. Step 2: Convert to fraction form
    508,918.80/711,553.20 = 508,918.80/x
  3. Step 3: Cross multiply
    508,918.80x = 711,553.20 × 508,918.80
  4. Step 4: Simplify right side
    508,918.80x = 362,122,800,680.16
  5. Step 5: Solve for x
    x = 362,122,800,680.16/508,918.80
  6. Step 6: Final answer
    x = 711,553.20

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.