Home / 1,152,898.79-1,591,000.11-643,601.16

Finding the Fourth Proportional to 1,152,898.79, 1,591,000.11 and 643,601.16

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Solution

The fourth proportional to 1,152,898.79, 1,591,000.11 and 643,601.16 is: 888,169.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,898.79 : 1,591,000.11 = 643,601.16 : x
  2. Step 2: Convert to fraction form
    1,152,898.79/1,591,000.11 = 643,601.16/x
  3. Step 3: Cross multiply
    1,152,898.79x = 1,591,000.11 × 643,601.16
  4. Step 4: Simplify right side
    1,152,898.79x = 1,023,969,516,356.13
  5. Step 5: Solve for x
    x = 1,023,969,516,356.13/1,152,898.79
  6. Step 6: Final answer
    x = 888,169.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.