Home / 749,246.10-1,123,869.15-429,069.30

Finding the Fourth Proportional to 749,246.10, 1,123,869.15 and 429,069.30

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Solution

The fourth proportional to 749,246.10, 1,123,869.15 and 429,069.30 is: 643,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,246.10 : 1,123,869.15 = 429,069.30 : x
  2. Step 2: Convert to fraction form
    749,246.10/1,123,869.15 = 429,069.30/x
  3. Step 3: Cross multiply
    749,246.10x = 1,123,869.15 × 429,069.30
  4. Step 4: Simplify right side
    749,246.10x = 482,217,749,482.10
  5. Step 5: Solve for x
    x = 482,217,749,482.10/749,246.10
  6. Step 6: Final answer
    x = 643,603.95

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Double scale
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Similar ratio
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1.5x scale

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.