Home / 745,546.60-1,118,319.90-687,809.80

Finding the Fourth Proportional to 745,546.60, 1,118,319.90 and 687,809.80

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Solution

The fourth proportional to 745,546.60, 1,118,319.90 and 687,809.80 is: 1,031,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,546.60 : 1,118,319.90 = 687,809.80 : x
  2. Step 2: Convert to fraction form
    745,546.60/1,118,319.90 = 687,809.80/x
  3. Step 3: Cross multiply
    745,546.60x = 1,118,319.90 × 687,809.80
  4. Step 4: Simplify right side
    745,546.60x = 769,191,386,755.02
  5. Step 5: Solve for x
    x = 769,191,386,755.02/745,546.60
  6. Step 6: Final answer
    x = 1,031,714.70

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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.