Home / 411,528.30-618,604.65-387,908.70

Finding the Fourth Proportional to 411,528.30, 618,604.65 and 387,908.70

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Solution

The fourth proportional to 411,528.30, 618,604.65 and 387,908.70 is: 583,099.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,528.30 : 618,604.65 = 387,908.70 : x
  2. Step 2: Convert to fraction form
    411,528.30/618,604.65 = 387,908.70/x
  3. Step 3: Cross multiply
    411,528.30x = 618,604.65 × 387,908.70
  4. Step 4: Simplify right side
    411,528.30x = 239,962,125,595.46
  5. Step 5: Solve for x
    x = 239,962,125,595.46/411,528.30
  6. Step 6: Final answer
    x = 583,099.94

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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.