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Finding the Fourth Proportional to 672,901.30, 928,624.53 and 386,478.82

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Solution

The fourth proportional to 672,901.30, 928,624.53 and 386,478.82 is: 533,352.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,901.30 : 928,624.53 = 386,478.82 : x
  2. Step 2: Convert to fraction form
    672,901.30/928,624.53 = 386,478.82/x
  3. Step 3: Cross multiply
    672,901.30x = 928,624.53 × 386,478.82
  4. Step 4: Simplify right side
    672,901.30x = 358,893,712,577.46
  5. Step 5: Solve for x
    x = 358,893,712,577.46/672,901.30
  6. Step 6: Final answer
    x = 533,352.68

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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.