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Finding the Fourth Proportional to 912,909.96, 1,259,793 and 505,034.46

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Solution

The fourth proportional to 912,909.96, 1,259,793 and 505,034.46 is: 696,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,909.96 : 1,259,793 = 505,034.46 : x
  2. Step 2: Convert to fraction form
    912,909.96/1,259,793 = 505,034.46/x
  3. Step 3: Cross multiply
    912,909.96x = 1,259,793 × 505,034.46
  4. Step 4: Simplify right side
    912,909.96x = 636,238,877,466.78
  5. Step 5: Solve for x
    x = 636,238,877,466.78/912,909.96
  6. Step 6: Final answer
    x = 696,934.97

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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.