Home / 687,660.60-1,031,490.90-569,465.40

Finding the Fourth Proportional to 687,660.60, 1,031,490.90 and 569,465.40

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Solution

The fourth proportional to 687,660.60, 1,031,490.90 and 569,465.40 is: 854,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,660.60 : 1,031,490.90 = 569,465.40 : x
  2. Step 2: Convert to fraction form
    687,660.60/1,031,490.90 = 569,465.40/x
  3. Step 3: Cross multiply
    687,660.60x = 1,031,490.90 × 569,465.40
  4. Step 4: Simplify right side
    687,660.60x = 587,398,377,964.86
  5. Step 5: Solve for x
    x = 587,398,377,964.86/687,660.60
  6. Step 6: Final answer
    x = 854,198.10

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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.