Home / 418,180,686.96-577,210,998.78-278,951,116.58

Finding the Fourth Proportional to 418,180,686.96, 577,210,998.78 and 278,951,116.58

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Solution

The fourth proportional to 418,180,686.96, 577,210,998.78 and 278,951,116.58 is: 385,033,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,180,686.96 : 577,210,998.78 = 278,951,116.58 : x
  2. Step 2: Convert to fraction form
    418,180,686.96/577,210,998.78 = 278,951,116.58/x
  3. Step 3: Cross multiply
    418,180,686.96x = 577,210,998.78 × 278,951,116.58
  4. Step 4: Simplify right side
    418,180,686.96x = 161,013,652,611,938,016
  5. Step 5: Solve for x
    x = 161,013,652,611,938,016/418,180,686.96
  6. Step 6: Final answer
    x = 385,033,689.10

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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.