Home / 721,752,524.32-996,028,038.64-391,731,619.36

Finding the Fourth Proportional to 721,752,524.32, 996,028,038.64 and 391,731,619.36

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Solution

The fourth proportional to 721,752,524.32, 996,028,038.64 and 391,731,619.36 is: 540,594,820.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,752,524.32 : 996,028,038.64 = 391,731,619.36 : x
  2. Step 2: Convert to fraction form
    721,752,524.32/996,028,038.64 = 391,731,619.36/x
  3. Step 3: Cross multiply
    721,752,524.32x = 996,028,038.64 × 391,731,619.36
  4. Step 4: Simplify right side
    721,752,524.32x = 390,175,676,504,411,840
  5. Step 5: Solve for x
    x = 390,175,676,504,411,840/721,752,524.32
  6. Step 6: Final answer
    x = 540,594,820.74

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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.