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Finding the Fourth Proportional to 598,616.70, 897,925.05 and 431,311.20

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Solution

The fourth proportional to 598,616.70, 897,925.05 and 431,311.20 is: 646,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,616.70 : 897,925.05 = 431,311.20 : x
  2. Step 2: Convert to fraction form
    598,616.70/897,925.05 = 431,311.20/x
  3. Step 3: Cross multiply
    598,616.70x = 897,925.05 × 431,311.20
  4. Step 4: Simplify right side
    598,616.70x = 387,285,130,825.56
  5. Step 5: Solve for x
    x = 387,285,130,825.56/598,616.70
  6. Step 6: Final answer
    x = 646,966.80

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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.