Home / 1,287,605.20-1,931,062.20-539,496.40

Finding the Fourth Proportional to 1,287,605.20, 1,931,062.20 and 539,496.40

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Solution

The fourth proportional to 1,287,605.20, 1,931,062.20 and 539,496.40 is: 809,099.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,605.20 : 1,931,062.20 = 539,496.40 : x
  2. Step 2: Convert to fraction form
    1,287,605.20/1,931,062.20 = 539,496.40/x
  3. Step 3: Cross multiply
    1,287,605.20x = 1,931,062.20 × 539,496.40
  4. Step 4: Simplify right side
    1,287,605.20x = 1,041,801,105,076.08
  5. Step 5: Solve for x
    x = 1,041,801,105,076.08/1,287,605.20
  6. Step 6: Final answer
    x = 809,099.80

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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.