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Finding the Fourth Proportional to 651,693.71, 899,080.74 and 406,535.81

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Solution

The fourth proportional to 651,693.71, 899,080.74 and 406,535.81 is: 560,859.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,693.71 : 899,080.74 = 406,535.81 : x
  2. Step 2: Convert to fraction form
    651,693.71/899,080.74 = 406,535.81/x
  3. Step 3: Cross multiply
    651,693.71x = 899,080.74 × 406,535.81
  4. Step 4: Simplify right side
    651,693.71x = 365,508,516,891.30
  5. Step 5: Solve for x
    x = 365,508,516,891.30/651,693.71
  6. Step 6: Final answer
    x = 560,859.36

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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.