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Finding the Fourth Proportional to 479,363,403.16, 661,978,368.24 and 453,248,017.20

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Solution

The fourth proportional to 479,363,403.16, 661,978,368.24 and 453,248,017.20 is: 625,914,245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,363,403.16 : 661,978,368.24 = 453,248,017.20 : x
  2. Step 2: Convert to fraction form
    479,363,403.16/661,978,368.24 = 453,248,017.20/x
  3. Step 3: Cross multiply
    479,363,403.16x = 661,978,368.24 × 453,248,017.20
  4. Step 4: Simplify right side
    479,363,403.16x = 300,040,382,834,071,424
  5. Step 5: Solve for x
    x = 300,040,382,834,071,424/479,363,403.16
  6. Step 6: Final answer
    x = 625,914,245.55

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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.