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Finding the Fourth Proportional to 715,807.80, 1,073,711.70 and 705,310.20

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Solution

The fourth proportional to 715,807.80, 1,073,711.70 and 705,310.20 is: 1,057,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,807.80 : 1,073,711.70 = 705,310.20 : x
  2. Step 2: Convert to fraction form
    715,807.80/1,073,711.70 = 705,310.20/x
  3. Step 3: Cross multiply
    715,807.80x = 1,073,711.70 × 705,310.20
  4. Step 4: Simplify right side
    715,807.80x = 757,299,813,869.34
  5. Step 5: Solve for x
    x = 757,299,813,869.34/715,807.80
  6. Step 6: Final answer
    x = 1,057,965.30

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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.