Home / 747,800.34-1,119,912.30-431,297.70

Finding the Fourth Proportional to 747,800.34, 1,119,912.30 and 431,297.70

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Solution

The fourth proportional to 747,800.34, 1,119,912.30 and 431,297.70 is: 645,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,800.34 : 1,119,912.30 = 431,297.70 : x
  2. Step 2: Convert to fraction form
    747,800.34/1,119,912.30 = 431,297.70/x
  3. Step 3: Cross multiply
    747,800.34x = 1,119,912.30 × 431,297.70
  4. Step 4: Simplify right side
    747,800.34x = 483,015,599,191.71
  5. Step 5: Solve for x
    x = 483,015,599,191.71/747,800.34
  6. Step 6: Final answer
    x = 645,915.19

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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.