Home / 878,754.02-1,317,656.77-398,719.87

Finding the Fourth Proportional to 878,754.02, 1,317,656.77 and 398,719.87

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Solution

The fourth proportional to 878,754.02, 1,317,656.77 and 398,719.87 is: 597,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,754.02 : 1,317,656.77 = 398,719.87 : x
  2. Step 2: Convert to fraction form
    878,754.02/1,317,656.77 = 398,719.87/x
  3. Step 3: Cross multiply
    878,754.02x = 1,317,656.77 × 398,719.87
  4. Step 4: Simplify right side
    878,754.02x = 525,375,931,748.08
  5. Step 5: Solve for x
    x = 525,375,931,748.08/878,754.02
  6. Step 6: Final answer
    x = 597,864.62

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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.