Home / 781,662,640.24-1,172,531,666.94-257,020,126.12

Finding the Fourth Proportional to 781,662,640.24, 1,172,531,666.94 and 257,020,126.12

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Solution

The fourth proportional to 781,662,640.24, 1,172,531,666.94 and 257,020,126.12 is: 385,542,587.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,662,640.24 : 1,172,531,666.94 = 257,020,126.12 : x
  2. Step 2: Convert to fraction form
    781,662,640.24/1,172,531,666.94 = 257,020,126.12/x
  3. Step 3: Cross multiply
    781,662,640.24x = 1,172,531,666.94 × 257,020,126.12
  4. Step 4: Simplify right side
    781,662,640.24x = 301,364,236,916,612,672
  5. Step 5: Solve for x
    x = 301,364,236,916,612,672/781,662,640.24
  6. Step 6: Final answer
    x = 385,542,587.56

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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.