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Finding the Fourth Proportional to 978,524.42, 1,349,790.21 and 615,372.26

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Solution

The fourth proportional to 978,524.42, 1,349,790.21 and 615,372.26 is: 848,853.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,524.42 : 1,349,790.21 = 615,372.26 : x
  2. Step 2: Convert to fraction form
    978,524.42/1,349,790.21 = 615,372.26/x
  3. Step 3: Cross multiply
    978,524.42x = 1,349,790.21 × 615,372.26
  4. Step 4: Simplify right side
    978,524.42x = 830,623,452,053.58
  5. Step 5: Solve for x
    x = 830,623,452,053.58/978,524.42
  6. Step 6: Final answer
    x = 848,853.06

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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.