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Finding the Fourth Proportional to 570,570.56, 787,397.04 and 312,443.36

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Solution

The fourth proportional to 570,570.56, 787,397.04 and 312,443.36 is: 431,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,570.56 : 787,397.04 = 312,443.36 : x
  2. Step 2: Convert to fraction form
    570,570.56/787,397.04 = 312,443.36/x
  3. Step 3: Cross multiply
    570,570.56x = 787,397.04 × 312,443.36
  4. Step 4: Simplify right side
    570,570.56x = 246,016,976,831.65
  5. Step 5: Solve for x
    x = 246,016,976,831.65/570,570.56
  6. Step 6: Final answer
    x = 431,177.13

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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.