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Finding the Fourth Proportional to 537,881.20, 806,821.80 and 479,820.40

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Solution

The fourth proportional to 537,881.20, 806,821.80 and 479,820.40 is: 719,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,881.20 : 806,821.80 = 479,820.40 : x
  2. Step 2: Convert to fraction form
    537,881.20/806,821.80 = 479,820.40/x
  3. Step 3: Cross multiply
    537,881.20x = 806,821.80 × 479,820.40
  4. Step 4: Simplify right side
    537,881.20x = 387,129,558,804.72
  5. Step 5: Solve for x
    x = 387,129,558,804.72/537,881.20
  6. Step 6: Final answer
    x = 719,730.60

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1.5x scale

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.