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Finding the Fourth Proportional to 583,790.40, 875,620.80 and 478,425.60

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Solution

The fourth proportional to 583,790.40, 875,620.80 and 478,425.60 is: 717,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,790.40 : 875,620.80 = 478,425.60 : x
  2. Step 2: Convert to fraction form
    583,790.40/875,620.80 = 478,425.60/x
  3. Step 3: Cross multiply
    583,790.40x = 875,620.80 × 478,425.60
  4. Step 4: Simplify right side
    583,790.40x = 418,919,406,612.48
  5. Step 5: Solve for x
    x = 418,919,406,612.48/583,790.40
  6. Step 6: Final answer
    x = 717,585.30

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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.