Home / 771,445.80-1,157,333.94-392,419.26

Finding the Fourth Proportional to 771,445.80, 1,157,333.94 and 392,419.26

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Solution

The fourth proportional to 771,445.80, 1,157,333.94 and 392,419.26 is: 588,712.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,445.80 : 1,157,333.94 = 392,419.26 : x
  2. Step 2: Convert to fraction form
    771,445.80/1,157,333.94 = 392,419.26/x
  3. Step 3: Cross multiply
    771,445.80x = 1,157,333.94 × 392,419.26
  4. Step 4: Simplify right side
    771,445.80x = 454,160,128,307.68
  5. Step 5: Solve for x
    x = 454,160,128,307.68/771,445.80
  6. Step 6: Final answer
    x = 588,712.94

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1.5x scale

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.