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Finding the Fourth Proportional to 692,035.72, 955,042.02 and 390,223.24

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Solution

The fourth proportional to 692,035.72, 955,042.02 and 390,223.24 is: 538,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,035.72 : 955,042.02 = 390,223.24 : x
  2. Step 2: Convert to fraction form
    692,035.72/955,042.02 = 390,223.24/x
  3. Step 3: Cross multiply
    692,035.72x = 955,042.02 × 390,223.24
  4. Step 4: Simplify right side
    692,035.72x = 372,679,591,380.55
  5. Step 5: Solve for x
    x = 372,679,591,380.55/692,035.72
  6. Step 6: Final answer
    x = 538,526.52

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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.