Home / 486,938.40-729,095.40-381,962.40

Finding the Fourth Proportional to 486,938.40, 729,095.40 and 381,962.40

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Solution

The fourth proportional to 486,938.40, 729,095.40 and 381,962.40 is: 571,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,938.40 : 729,095.40 = 381,962.40 : x
  2. Step 2: Convert to fraction form
    486,938.40/729,095.40 = 381,962.40/x
  3. Step 3: Cross multiply
    486,938.40x = 729,095.40 × 381,962.40
  4. Step 4: Simplify right side
    486,938.40x = 278,487,028,812.96
  5. Step 5: Solve for x
    x = 278,487,028,812.96/486,938.40
  6. Step 6: Final answer
    x = 571,914.29

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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.