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Finding the Fourth Proportional to 612,039.20, 918,058.80 and 588,711.20

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Solution

The fourth proportional to 612,039.20, 918,058.80 and 588,711.20 is: 883,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,039.20 : 918,058.80 = 588,711.20 : x
  2. Step 2: Convert to fraction form
    612,039.20/918,058.80 = 588,711.20/x
  3. Step 3: Cross multiply
    612,039.20x = 918,058.80 × 588,711.20
  4. Step 4: Simplify right side
    612,039.20x = 540,471,497,818.56
  5. Step 5: Solve for x
    x = 540,471,497,818.56/612,039.20
  6. Step 6: Final answer
    x = 883,066.80

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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.