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Finding the Fourth Proportional to 545,854.70, 818,004.45 and 402,581.90

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Solution

The fourth proportional to 545,854.70, 818,004.45 and 402,581.90 is: 603,299.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,854.70 : 818,004.45 = 402,581.90 : x
  2. Step 2: Convert to fraction form
    545,854.70/818,004.45 = 402,581.90/x
  3. Step 3: Cross multiply
    545,854.70x = 818,004.45 × 402,581.90
  4. Step 4: Simplify right side
    545,854.70x = 329,313,785,689.46
  5. Step 5: Solve for x
    x = 329,313,785,689.46/545,854.70
  6. Step 6: Final answer
    x = 603,299.35

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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.