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Finding the Fourth Proportional to 407,712.30, 611,568.45 and 407,712.30

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Solution

The fourth proportional to 407,712.30, 611,568.45 and 407,712.30 is: 611,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,712.30 : 611,568.45 = 407,712.30 : x
  2. Step 2: Convert to fraction form
    407,712.30/611,568.45 = 407,712.30/x
  3. Step 3: Cross multiply
    407,712.30x = 611,568.45 × 407,712.30
  4. Step 4: Simplify right side
    407,712.30x = 249,343,979,356.94
  5. Step 5: Solve for x
    x = 249,343,979,356.94/407,712.30
  6. Step 6: Final answer
    x = 611,568.45

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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.