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Finding the Fourth Proportional to 537,803.70, 804,955.95 and 418,830.90

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Solution

The fourth proportional to 537,803.70, 804,955.95 and 418,830.90 is: 626,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,803.70 : 804,955.95 = 418,830.90 : x
  2. Step 2: Convert to fraction form
    537,803.70/804,955.95 = 418,830.90/x
  3. Step 3: Cross multiply
    537,803.70x = 804,955.95 × 418,830.90
  4. Step 4: Simplify right side
    537,803.70x = 337,140,424,998.86
  5. Step 5: Solve for x
    x = 337,140,424,998.86/537,803.70
  6. Step 6: Final answer
    x = 626,883.80

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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.