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Finding the Fourth Proportional to 598,864.80, 897,260.40 and 388,394.40

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Solution

The fourth proportional to 598,864.80, 897,260.40 and 388,394.40 is: 581,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,864.80 : 897,260.40 = 388,394.40 : x
  2. Step 2: Convert to fraction form
    598,864.80/897,260.40 = 388,394.40/x
  3. Step 3: Cross multiply
    598,864.80x = 897,260.40 × 388,394.40
  4. Step 4: Simplify right side
    598,864.80x = 348,490,914,701.76
  5. Step 5: Solve for x
    x = 348,490,914,701.76/598,864.80
  6. Step 6: Final answer
    x = 581,919.18

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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.