Home / 887,990.89-1,225,402.53-485,574.25

Finding the Fourth Proportional to 887,990.89, 1,225,402.53 and 485,574.25

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Solution

The fourth proportional to 887,990.89, 1,225,402.53 and 485,574.25 is: 670,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,990.89 : 1,225,402.53 = 485,574.25 : x
  2. Step 2: Convert to fraction form
    887,990.89/1,225,402.53 = 485,574.25/x
  3. Step 3: Cross multiply
    887,990.89x = 1,225,402.53 × 485,574.25
  4. Step 4: Simplify right side
    887,990.89x = 595,023,914,452.85
  5. Step 5: Solve for x
    x = 595,023,914,452.85/887,990.89
  6. Step 6: Final answer
    x = 670,078.85

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Double scale
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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.