Home / 786,142.24-1,179,274.92-280,812.40

Finding the Fourth Proportional to 786,142.24, 1,179,274.92 and 280,812.40

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Solution

The fourth proportional to 786,142.24, 1,179,274.92 and 280,812.40 is: 421,240.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,142.24 : 1,179,274.92 = 280,812.40 : x
  2. Step 2: Convert to fraction form
    786,142.24/1,179,274.92 = 280,812.40/x
  3. Step 3: Cross multiply
    786,142.24x = 1,179,274.92 × 280,812.40
  4. Step 4: Simplify right side
    786,142.24x = 331,155,020,545.01
  5. Step 5: Solve for x
    x = 331,155,020,545.01/786,142.24
  6. Step 6: Final answer
    x = 421,240.59

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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.