Home / 781,778,318.46-1,172,666,487.40-199,512,577.06

Finding the Fourth Proportional to 781,778,318.46, 1,172,666,487.40 and 199,512,577.06

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Solution

The fourth proportional to 781,778,318.46, 1,172,666,487.40 and 199,512,577.06 is: 299,268,612.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,778,318.46 : 1,172,666,487.40 = 199,512,577.06 : x
  2. Step 2: Convert to fraction form
    781,778,318.46/1,172,666,487.40 = 199,512,577.06/x
  3. Step 3: Cross multiply
    781,778,318.46x = 1,172,666,487.40 × 199,512,577.06
  4. Step 4: Simplify right side
    781,778,318.46x = 233,961,712,933,072,032
  5. Step 5: Solve for x
    x = 233,961,712,933,072,032/781,778,318.46
  6. Step 6: Final answer
    x = 299,268,612.86

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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.