Home / 718,780.20-1,078,170.30-637,909.80

Finding the Fourth Proportional to 718,780.20, 1,078,170.30 and 637,909.80

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Solution

The fourth proportional to 718,780.20, 1,078,170.30 and 637,909.80 is: 956,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,780.20 : 1,078,170.30 = 637,909.80 : x
  2. Step 2: Convert to fraction form
    718,780.20/1,078,170.30 = 637,909.80/x
  3. Step 3: Cross multiply
    718,780.20x = 1,078,170.30 × 637,909.80
  4. Step 4: Simplify right side
    718,780.20x = 687,775,400,438.94
  5. Step 5: Solve for x
    x = 687,775,400,438.94/718,780.20
  6. Step 6: Final answer
    x = 956,864.70

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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.