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Finding the Fourth Proportional to 978,037.68, 1,349,695.44 and 570,420.96

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Solution

The fourth proportional to 978,037.68, 1,349,695.44 and 570,420.96 is: 787,182.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,037.68 : 1,349,695.44 = 570,420.96 : x
  2. Step 2: Convert to fraction form
    978,037.68/1,349,695.44 = 570,420.96/x
  3. Step 3: Cross multiply
    978,037.68x = 1,349,695.44 × 570,420.96
  4. Step 4: Simplify right side
    978,037.68x = 769,894,568,592.42
  5. Step 5: Solve for x
    x = 769,894,568,592.42/978,037.68
  6. Step 6: Final answer
    x = 787,182.93

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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.