Home / 753,123.80-1,129,329.30-437,677.40

Finding the Fourth Proportional to 753,123.80, 1,129,329.30 and 437,677.40

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Solution

The fourth proportional to 753,123.80, 1,129,329.30 and 437,677.40 is: 656,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,123.80 : 1,129,329.30 = 437,677.40 : x
  2. Step 2: Convert to fraction form
    753,123.80/1,129,329.30 = 437,677.40/x
  3. Step 3: Cross multiply
    753,123.80x = 1,129,329.30 × 437,677.40
  4. Step 4: Simplify right side
    753,123.80x = 494,281,911,767.82
  5. Step 5: Solve for x
    x = 494,281,911,767.82/753,123.80
  6. Step 6: Final answer
    x = 656,308.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.