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Finding the Fourth Proportional to 978,374.40, 1,350,156.24 and 570,494.16

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Solution

The fourth proportional to 978,374.40, 1,350,156.24 and 570,494.16 is: 787,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,374.40 : 1,350,156.24 = 570,494.16 : x
  2. Step 2: Convert to fraction form
    978,374.40/1,350,156.24 = 570,494.16/x
  3. Step 3: Cross multiply
    978,374.40x = 1,350,156.24 × 570,494.16
  4. Step 4: Simplify right side
    978,374.40x = 770,256,250,007.56
  5. Step 5: Solve for x
    x = 770,256,250,007.56/978,374.40
  6. Step 6: Final answer
    x = 787,281.69

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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.