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Finding the Fourth Proportional to 717,860.16, 990,601.92 and 431,210.88

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Solution

The fourth proportional to 717,860.16, 990,601.92 and 431,210.88 is: 595,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,860.16 : 990,601.92 = 431,210.88 : x
  2. Step 2: Convert to fraction form
    717,860.16/990,601.92 = 431,210.88/x
  3. Step 3: Cross multiply
    717,860.16x = 990,601.92 × 431,210.88
  4. Step 4: Simplify right side
    717,860.16x = 427,158,325,652.89
  5. Step 5: Solve for x
    x = 427,158,325,652.89/717,860.16
  6. Step 6: Final answer
    x = 595,043.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.