Home / 887,130.70-1,331,570.85-438,358.30

Finding the Fourth Proportional to 887,130.70, 1,331,570.85 and 438,358.30

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Solution

The fourth proportional to 887,130.70, 1,331,570.85 and 438,358.30 is: 657,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,130.70 : 1,331,570.85 = 438,358.30 : x
  2. Step 2: Convert to fraction form
    887,130.70/1,331,570.85 = 438,358.30/x
  3. Step 3: Cross multiply
    887,130.70x = 1,331,570.85 × 438,358.30
  4. Step 4: Simplify right side
    887,130.70x = 583,705,134,135.56
  5. Step 5: Solve for x
    x = 583,705,134,135.56/887,130.70
  6. Step 6: Final answer
    x = 657,969.72

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Double scale
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1.5x scale

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.