Home / 921,049.28-1,381,452.96-289,966.40

Finding the Fourth Proportional to 921,049.28, 1,381,452.96 and 289,966.40

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Solution

The fourth proportional to 921,049.28, 1,381,452.96 and 289,966.40 is: 434,911.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,049.28 : 1,381,452.96 = 289,966.40 : x
  2. Step 2: Convert to fraction form
    921,049.28/1,381,452.96 = 289,966.40/x
  3. Step 3: Cross multiply
    921,049.28x = 1,381,452.96 × 289,966.40
  4. Step 4: Simplify right side
    921,049.28x = 400,574,941,580.54
  5. Step 5: Solve for x
    x = 400,574,941,580.54/921,049.28
  6. Step 6: Final answer
    x = 434,911.52

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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.