Home / 558,017.76-836,764.12-389,728.10

Finding the Fourth Proportional to 558,017.76, 836,764.12 and 389,728.10

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Solution

The fourth proportional to 558,017.76, 836,764.12 and 389,728.10 is: 584,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,017.76 : 836,764.12 = 389,728.10 : x
  2. Step 2: Convert to fraction form
    558,017.76/836,764.12 = 389,728.10/x
  3. Step 3: Cross multiply
    558,017.76x = 836,764.12 × 389,728.10
  4. Step 4: Simplify right side
    558,017.76x = 326,110,490,635.77
  5. Step 5: Solve for x
    x = 326,110,490,635.77/558,017.76
  6. Step 6: Final answer
    x = 584,408.80

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1.5x scale

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.