Home / 978,979.38-1,350,970.29-565,516.50

Finding the Fourth Proportional to 978,979.38, 1,350,970.29 and 565,516.50

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Solution

The fourth proportional to 978,979.38, 1,350,970.29 and 565,516.50 is: 780,400.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,979.38 : 1,350,970.29 = 565,516.50 : x
  2. Step 2: Convert to fraction form
    978,979.38/1,350,970.29 = 565,516.50/x
  3. Step 3: Cross multiply
    978,979.38x = 1,350,970.29 × 565,516.50
  4. Step 4: Simplify right side
    978,979.38x = 763,995,990,004.79
  5. Step 5: Solve for x
    x = 763,995,990,004.79/978,979.38
  6. Step 6: Final answer
    x = 780,400.49

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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.