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Finding the Fourth Proportional to 598,916.80, 897,338.40 and 388,446.40

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Solution

The fourth proportional to 598,916.80, 897,338.40 and 388,446.40 is: 581,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,916.80 : 897,338.40 = 388,446.40 : x
  2. Step 2: Convert to fraction form
    598,916.80/897,338.40 = 388,446.40/x
  3. Step 3: Cross multiply
    598,916.80x = 897,338.40 × 388,446.40
  4. Step 4: Simplify right side
    598,916.80x = 348,567,871,061.76
  5. Step 5: Solve for x
    x = 348,567,871,061.76/598,916.80
  6. Step 6: Final answer
    x = 581,997.15

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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.