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Finding the Fourth Proportional to 612,881.60, 845,079.20 and 431,535.52

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Solution

The fourth proportional to 612,881.60, 845,079.20 and 431,535.52 is: 595,027.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,881.60 : 845,079.20 = 431,535.52 : x
  2. Step 2: Convert to fraction form
    612,881.60/845,079.20 = 431,535.52/x
  3. Step 3: Cross multiply
    612,881.60x = 845,079.20 × 431,535.52
  4. Step 4: Simplify right side
    612,881.60x = 364,681,692,013.18
  5. Step 5: Solve for x
    x = 364,681,692,013.18/612,881.60
  6. Step 6: Final answer
    x = 595,027.97

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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.