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Finding the Fourth Proportional to 978,184.89, 1,349,973.41 and 542,645.24

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Solution

The fourth proportional to 978,184.89, 1,349,973.41 and 542,645.24 is: 748,893.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,184.89 : 1,349,973.41 = 542,645.24 : x
  2. Step 2: Convert to fraction form
    978,184.89/1,349,973.41 = 542,645.24/x
  3. Step 3: Cross multiply
    978,184.89x = 1,349,973.41 × 542,645.24
  4. Step 4: Simplify right side
    978,184.89x = 732,556,635,599.98
  5. Step 5: Solve for x
    x = 732,556,635,599.98/978,184.89
  6. Step 6: Final answer
    x = 748,893.84

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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.