Home / 887,569.40-1,331,663.20-280,450.35

Finding the Fourth Proportional to 887,569.40, 1,331,663.20 and 280,450.35

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Solution

The fourth proportional to 887,569.40, 1,331,663.20 and 280,450.35 is: 420,773.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,569.40 : 1,331,663.20 = 280,450.35 : x
  2. Step 2: Convert to fraction form
    887,569.40/1,331,663.20 = 280,450.35/x
  3. Step 3: Cross multiply
    887,569.40x = 1,331,663.20 × 280,450.35
  4. Step 4: Simplify right side
    887,569.40x = 373,465,409,820.99
  5. Step 5: Solve for x
    x = 373,465,409,820.99/887,569.40
  6. Step 6: Final answer
    x = 420,773.19

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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.