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Finding the Fourth Proportional to 583,428.80, 875,143.20 and 547,999.40

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Solution

The fourth proportional to 583,428.80, 875,143.20 and 547,999.40 is: 821,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,428.80 : 875,143.20 = 547,999.40 : x
  2. Step 2: Convert to fraction form
    583,428.80/875,143.20 = 547,999.40/x
  3. Step 3: Cross multiply
    583,428.80x = 875,143.20 × 547,999.40
  4. Step 4: Simplify right side
    583,428.80x = 479,577,948,514.08
  5. Step 5: Solve for x
    x = 479,577,948,514.08/583,428.80
  6. Step 6: Final answer
    x = 821,999.10

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Similar ratio
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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.