Home / 878,755.02-1,317,658.27-398,720.87

Finding the Fourth Proportional to 878,755.02, 1,317,658.27 and 398,720.87

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Solution

The fourth proportional to 878,755.02, 1,317,658.27 and 398,720.87 is: 597,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,755.02 : 1,317,658.27 = 398,720.87 : x
  2. Step 2: Convert to fraction form
    878,755.02/1,317,658.27 = 398,720.87/x
  3. Step 3: Cross multiply
    878,755.02x = 1,317,658.27 × 398,720.87
  4. Step 4: Simplify right side
    878,755.02x = 525,377,847,486.15
  5. Step 5: Solve for x
    x = 525,377,847,486.15/878,755.02
  6. Step 6: Final answer
    x = 597,866.12

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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.