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Finding the Fourth Proportional to 522,492.13, 721,038.92 and 304,658.77

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Solution

The fourth proportional to 522,492.13, 721,038.92 and 304,658.77 is: 420,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,492.13 : 721,038.92 = 304,658.77 : x
  2. Step 2: Convert to fraction form
    522,492.13/721,038.92 = 304,658.77/x
  3. Step 3: Cross multiply
    522,492.13x = 721,038.92 × 304,658.77
  4. Step 4: Simplify right side
    522,492.13x = 219,670,830,489.33
  5. Step 5: Solve for x
    x = 219,670,830,489.33/522,492.13
  6. Step 6: Final answer
    x = 420,428.97

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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.