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Finding the Fourth Proportional to 537,811.20, 804,967.20 and 418,838.40

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Solution

The fourth proportional to 537,811.20, 804,967.20 and 418,838.40 is: 626,895.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,811.20 : 804,967.20 = 418,838.40 : x
  2. Step 2: Convert to fraction form
    537,811.20/804,967.20 = 418,838.40/x
  3. Step 3: Cross multiply
    537,811.20x = 804,967.20 × 418,838.40
  4. Step 4: Simplify right side
    537,811.20x = 337,151,174,100.48
  5. Step 5: Solve for x
    x = 337,151,174,100.48/537,811.20
  6. Step 6: Final answer
    x = 626,895.04

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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.