Home / 781,662,435.62-1,172,531,360.04-257,019,921.95

Finding the Fourth Proportional to 781,662,435.62, 1,172,531,360.04 and 257,019,921.95

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Solution

The fourth proportional to 781,662,435.62, 1,172,531,360.04 and 257,019,921.95 is: 385,542,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,662,435.62 : 1,172,531,360.04 = 257,019,921.95 : x
  2. Step 2: Convert to fraction form
    781,662,435.62/1,172,531,360.04 = 257,019,921.95/x
  3. Step 3: Cross multiply
    781,662,435.62x = 1,172,531,360.04 × 257,019,921.95
  4. Step 4: Simplify right side
    781,662,435.62x = 301,363,918,641,408,128
  5. Step 5: Solve for x
    x = 301,363,918,641,408,128/781,662,435.62
  6. Step 6: Final answer
    x = 385,542,281.31

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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.