Home / 715,245.39-987,045.35-392,962.19

Finding the Fourth Proportional to 715,245.39, 987,045.35 and 392,962.19

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Solution

The fourth proportional to 715,245.39, 987,045.35 and 392,962.19 is: 542,291.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,245.39 : 987,045.35 = 392,962.19 : x
  2. Step 2: Convert to fraction form
    715,245.39/987,045.35 = 392,962.19/x
  3. Step 3: Cross multiply
    715,245.39x = 987,045.35 × 392,962.19
  4. Step 4: Simplify right side
    715,245.39x = 387,871,495,465.28
  5. Step 5: Solve for x
    x = 387,871,495,465.28/715,245.39
  6. Step 6: Final answer
    x = 542,291.50

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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.