Home / 718,352.16-991,320.60-391,664.04

Finding the Fourth Proportional to 718,352.16, 991,320.60 and 391,664.04

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Solution

The fourth proportional to 718,352.16, 991,320.60 and 391,664.04 is: 540,493.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,352.16 : 991,320.60 = 391,664.04 : x
  2. Step 2: Convert to fraction form
    718,352.16/991,320.60 = 391,664.04/x
  3. Step 3: Cross multiply
    718,352.16x = 991,320.60 × 391,664.04
  4. Step 4: Simplify right side
    718,352.16x = 388,264,631,131.22
  5. Step 5: Solve for x
    x = 388,264,631,131.22/718,352.16
  6. Step 6: Final answer
    x = 540,493.44

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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.