Home / 905,428.60-1,356,587.70-431,092.60

Finding the Fourth Proportional to 905,428.60, 1,356,587.70 and 431,092.60

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Solution

The fourth proportional to 905,428.60, 1,356,587.70 and 431,092.60 is: 645,898.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,428.60 : 1,356,587.70 = 431,092.60 : x
  2. Step 2: Convert to fraction form
    905,428.60/1,356,587.70 = 431,092.60/x
  3. Step 3: Cross multiply
    905,428.60x = 1,356,587.70 × 431,092.60
  4. Step 4: Simplify right side
    905,428.60x = 584,814,918,721.02
  5. Step 5: Solve for x
    x = 584,814,918,721.02/905,428.60
  6. Step 6: Final answer
    x = 645,898.44

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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.