Home / 791,448,135.83-1,187,172,240.64-542,207,621.24

Finding the Fourth Proportional to 791,448,135.83, 1,187,172,240.64 and 542,207,621.24

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Solution

The fourth proportional to 791,448,135.83, 1,187,172,240.64 and 542,207,621.24 is: 813,311,457.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,448,135.83 : 1,187,172,240.64 = 542,207,621.24 : x
  2. Step 2: Convert to fraction form
    791,448,135.83/1,187,172,240.64 = 542,207,621.24/x
  3. Step 3: Cross multiply
    791,448,135.83x = 1,187,172,240.64 × 542,207,621.24
  4. Step 4: Simplify right side
    791,448,135.83x = 643,693,836,599,575,296
  5. Step 5: Solve for x
    x = 643,693,836,599,575,296/791,448,135.83
  6. Step 6: Final answer
    x = 813,311,457.14

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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.