Home / 709,807.70-1,064,711.55-509,705.30

Finding the Fourth Proportional to 709,807.70, 1,064,711.55 and 509,705.30

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Solution

The fourth proportional to 709,807.70, 1,064,711.55 and 509,705.30 is: 764,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,807.70 : 1,064,711.55 = 509,705.30 : x
  2. Step 2: Convert to fraction form
    709,807.70/1,064,711.55 = 509,705.30/x
  3. Step 3: Cross multiply
    709,807.70x = 1,064,711.55 × 509,705.30
  4. Step 4: Simplify right side
    709,807.70x = 542,689,120,006.22
  5. Step 5: Solve for x
    x = 542,689,120,006.22/709,807.70
  6. Step 6: Final answer
    x = 764,557.95

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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.