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Finding the Fourth Proportional to 672,613, 927,680.80 and 430,917.92

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Solution

The fourth proportional to 672,613, 927,680.80 and 430,917.92 is: 594,330.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,613 : 927,680.80 = 430,917.92 : x
  2. Step 2: Convert to fraction form
    672,613/927,680.80 = 430,917.92/x
  3. Step 3: Cross multiply
    672,613x = 927,680.80 × 430,917.92
  4. Step 4: Simplify right side
    672,613x = 399,754,280,759.94
  5. Step 5: Solve for x
    x = 399,754,280,759.94/672,613
  6. Step 6: Final answer
    x = 594,330.29

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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.