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Finding the Fourth Proportional to 638,547,868.80, 957,963,520.80 and 293,418,273.60

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Solution

The fourth proportional to 638,547,868.80, 957,963,520.80 and 293,418,273.60 is: 440,192,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,547,868.80 : 957,963,520.80 = 293,418,273.60 : x
  2. Step 2: Convert to fraction form
    638,547,868.80/957,963,520.80 = 293,418,273.60/x
  3. Step 3: Cross multiply
    638,547,868.80x = 957,963,520.80 × 293,418,273.60
  4. Step 4: Simplify right side
    638,547,868.80x = 281,084,002,444,913,696
  5. Step 5: Solve for x
    x = 281,084,002,444,913,696/638,547,868.80
  6. Step 6: Final answer
    x = 440,192,530.86

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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.