Home / 915,087,575.40-1,262,829,829.50-497,399,601.78

Finding the Fourth Proportional to 915,087,575.40, 1,262,829,829.50 and 497,399,601.78

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Solution

The fourth proportional to 915,087,575.40, 1,262,829,829.50 and 497,399,601.78 is: 686,416,329.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,087,575.40 : 1,262,829,829.50 = 497,399,601.78 : x
  2. Step 2: Convert to fraction form
    915,087,575.40/1,262,829,829.50 = 497,399,601.78/x
  3. Step 3: Cross multiply
    915,087,575.40x = 1,262,829,829.50 × 497,399,601.78
  4. Step 4: Simplify right side
    915,087,575.40x = 628,131,054,309,205,248
  5. Step 5: Solve for x
    x = 628,131,054,309,205,248/915,087,575.40
  6. Step 6: Final answer
    x = 686,416,329.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.