Home / 691,842.20-1,038,200.70-407,532.20

Finding the Fourth Proportional to 691,842.20, 1,038,200.70 and 407,532.20

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Solution

The fourth proportional to 691,842.20, 1,038,200.70 and 407,532.20 is: 611,555.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,842.20 : 1,038,200.70 = 407,532.20 : x
  2. Step 2: Convert to fraction form
    691,842.20/1,038,200.70 = 407,532.20/x
  3. Step 3: Cross multiply
    691,842.20x = 1,038,200.70 × 407,532.20
  4. Step 4: Simplify right side
    691,842.20x = 423,100,215,312.54
  5. Step 5: Solve for x
    x = 423,100,215,312.54/691,842.20
  6. Step 6: Final answer
    x = 611,555.95

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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.