Home / 781,662,235.68-1,172,531,062.98-257,019,722.35

Finding the Fourth Proportional to 781,662,235.68, 1,172,531,062.98 and 257,019,722.35

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Solution

The fourth proportional to 781,662,235.68, 1,172,531,062.98 and 257,019,722.35 is: 385,541,982.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,662,235.68 : 1,172,531,062.98 = 257,019,722.35 : x
  2. Step 2: Convert to fraction form
    781,662,235.68/1,172,531,062.98 = 257,019,722.35/x
  3. Step 3: Cross multiply
    781,662,235.68x = 1,172,531,062.98 × 257,019,722.35
  4. Step 4: Simplify right side
    781,662,235.68x = 301,363,608,250,938,624
  5. Step 5: Solve for x
    x = 301,363,608,250,938,624/781,662,235.68
  6. Step 6: Final answer
    x = 385,541,982.83

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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.