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Finding the Fourth Proportional to 545,854.20, 818,003.70 and 402,581.40

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Solution

The fourth proportional to 545,854.20, 818,003.70 and 402,581.40 is: 603,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,854.20 : 818,003.70 = 402,581.40 : x
  2. Step 2: Convert to fraction form
    545,854.20/818,003.70 = 402,581.40/x
  3. Step 3: Cross multiply
    545,854.20x = 818,003.70 × 402,581.40
  4. Step 4: Simplify right side
    545,854.20x = 329,313,074,751.18
  5. Step 5: Solve for x
    x = 329,313,074,751.18/545,854.20
  6. Step 6: Final answer
    x = 603,298.60

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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.