Home / 781,121.68-1,077,369.04-551,439.52

Finding the Fourth Proportional to 781,121.68, 1,077,369.04 and 551,439.52

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Solution

The fourth proportional to 781,121.68, 1,077,369.04 and 551,439.52 is: 760,577.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,121.68 : 1,077,369.04 = 551,439.52 : x
  2. Step 2: Convert to fraction form
    781,121.68/1,077,369.04 = 551,439.52/x
  3. Step 3: Cross multiply
    781,121.68x = 1,077,369.04 × 551,439.52
  4. Step 4: Simplify right side
    781,121.68x = 594,103,866,280.46
  5. Step 5: Solve for x
    x = 594,103,866,280.46/781,121.68
  6. Step 6: Final answer
    x = 760,577.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.