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Finding the Fourth Proportional to 720,020.70, 1,080,031.05 and 707,579.10

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Solution

The fourth proportional to 720,020.70, 1,080,031.05 and 707,579.10 is: 1,061,368.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,020.70 : 1,080,031.05 = 707,579.10 : x
  2. Step 2: Convert to fraction form
    720,020.70/1,080,031.05 = 707,579.10/x
  3. Step 3: Cross multiply
    720,020.70x = 1,080,031.05 × 707,579.10
  4. Step 4: Simplify right side
    720,020.70x = 764,207,398,331.06
  5. Step 5: Solve for x
    x = 764,207,398,331.06/720,020.70
  6. Step 6: Final answer
    x = 1,061,368.65

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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.