Home / 989,420.94-1,365,401.34-559,691.91

Finding the Fourth Proportional to 989,420.94, 1,365,401.34 and 559,691.91

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Solution

The fourth proportional to 989,420.94, 1,365,401.34 and 559,691.91 is: 772,375.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,420.94 : 1,365,401.34 = 559,691.91 : x
  2. Step 2: Convert to fraction form
    989,420.94/1,365,401.34 = 559,691.91/x
  3. Step 3: Cross multiply
    989,420.94x = 1,365,401.34 × 559,691.91
  4. Step 4: Simplify right side
    989,420.94x = 764,204,083,901.16
  5. Step 5: Solve for x
    x = 764,204,083,901.16/989,420.94
  6. Step 6: Final answer
    x = 772,375.09

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1.5x scale

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.