Home / 985,812.40-1,478,281.20-453,059.20

Finding the Fourth Proportional to 985,812.40, 1,478,281.20 and 453,059.20

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Solution

The fourth proportional to 985,812.40, 1,478,281.20 and 453,059.20 is: 679,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,812.40 : 1,478,281.20 = 453,059.20 : x
  2. Step 2: Convert to fraction form
    985,812.40/1,478,281.20 = 453,059.20/x
  3. Step 3: Cross multiply
    985,812.40x = 1,478,281.20 × 453,059.20
  4. Step 4: Simplify right side
    985,812.40x = 669,748,897,847.04
  5. Step 5: Solve for x
    x = 669,748,897,847.04/985,812.40
  6. Step 6: Final answer
    x = 679,387.78

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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.