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Finding the Fourth Proportional to 522,007.71, 720,421.20 and 292,603.97

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Solution

The fourth proportional to 522,007.71, 720,421.20 and 292,603.97 is: 403,821.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,007.71 : 720,421.20 = 292,603.97 : x
  2. Step 2: Convert to fraction form
    522,007.71/720,421.20 = 292,603.97/x
  3. Step 3: Cross multiply
    522,007.71x = 720,421.20 × 292,603.97
  4. Step 4: Simplify right side
    522,007.71x = 210,798,103,192.16
  5. Step 5: Solve for x
    x = 210,798,103,192.16/522,007.71
  6. Step 6: Final answer
    x = 403,821.82

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1.5x scale

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.