Home / 391,056.20-584,834.70-328,070.60

Finding the Fourth Proportional to 391,056.20, 584,834.70 and 328,070.60

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Solution

The fourth proportional to 391,056.20, 584,834.70 and 328,070.60 is: 490,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,056.20 : 584,834.70 = 328,070.60 : x
  2. Step 2: Convert to fraction form
    391,056.20/584,834.70 = 328,070.60/x
  3. Step 3: Cross multiply
    391,056.20x = 584,834.70 × 328,070.60
  4. Step 4: Simplify right side
    391,056.20x = 191,867,070,929.82
  5. Step 5: Solve for x
    x = 191,867,070,929.82/391,056.20
  6. Step 6: Final answer
    x = 490,638.10

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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.