Home / 558,020.76-836,768.64-389,731.12

Finding the Fourth Proportional to 558,020.76, 836,768.64 and 389,731.12

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Solution

The fourth proportional to 558,020.76, 836,768.64 and 389,731.12 is: 584,413.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,020.76 : 836,768.64 = 389,731.12 : x
  2. Step 2: Convert to fraction form
    558,020.76/836,768.64 = 389,731.12/x
  3. Step 3: Cross multiply
    558,020.76x = 836,768.64 × 389,731.12
  4. Step 4: Simplify right side
    558,020.76x = 326,114,779,248.08
  5. Step 5: Solve for x
    x = 326,114,779,248.08/558,020.76
  6. Step 6: Final answer
    x = 584,413.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.