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Finding the Fourth Proportional to 896,822,581.52, 1,237,645,699.12 and 520,450,029.20

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Solution

The fourth proportional to 896,822,581.52, 1,237,645,699.12 and 520,450,029.20 is: 718,238,761.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    896,822,581.52 : 1,237,645,699.12 = 520,450,029.20 : x
  2. Step 2: Convert to fraction form
    896,822,581.52/1,237,645,699.12 = 520,450,029.20/x
  3. Step 3: Cross multiply
    896,822,581.52x = 1,237,645,699.12 × 520,450,029.20
  4. Step 4: Simplify right side
    896,822,581.52x = 644,132,740,246,258,304
  5. Step 5: Solve for x
    x = 644,132,740,246,258,304/896,822,581.52
  6. Step 6: Final answer
    x = 718,238,761.51

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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.