Home / 687,404.20-1,031,106.30-615,087.40

Finding the Fourth Proportional to 687,404.20, 1,031,106.30 and 615,087.40

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Solution

The fourth proportional to 687,404.20, 1,031,106.30 and 615,087.40 is: 922,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,404.20 : 1,031,106.30 = 615,087.40 : x
  2. Step 2: Convert to fraction form
    687,404.20/1,031,106.30 = 615,087.40/x
  3. Step 3: Cross multiply
    687,404.20x = 1,031,106.30 × 615,087.40
  4. Step 4: Simplify right side
    687,404.20x = 634,220,493,190.62
  5. Step 5: Solve for x
    x = 634,220,493,190.62/687,404.20
  6. Step 6: Final answer
    x = 922,631.10

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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.