Home / 420,137,655.60-629,781,330.60-247,525,618.80

Finding the Fourth Proportional to 420,137,655.60, 629,781,330.60 and 247,525,618.80

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Solution

The fourth proportional to 420,137,655.60, 629,781,330.60 and 247,525,618.80 is: 371,037,947.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,137,655.60 : 629,781,330.60 = 247,525,618.80 : x
  2. Step 2: Convert to fraction form
    420,137,655.60/629,781,330.60 = 247,525,618.80/x
  3. Step 3: Cross multiply
    420,137,655.60x = 629,781,330.60 × 247,525,618.80
  4. Step 4: Simplify right side
    420,137,655.60x = 155,887,013,565,452,384
  5. Step 5: Solve for x
    x = 155,887,013,565,452,384/420,137,655.60
  6. Step 6: Final answer
    x = 371,037,947.89

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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.