Home / 513,320.60-769,106.10-438,087.80

Finding the Fourth Proportional to 513,320.60, 769,106.10 and 438,087.80

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Solution

The fourth proportional to 513,320.60, 769,106.10 and 438,087.80 is: 656,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,320.60 : 769,106.10 = 438,087.80 : x
  2. Step 2: Convert to fraction form
    513,320.60/769,106.10 = 438,087.80/x
  3. Step 3: Cross multiply
    513,320.60x = 769,106.10 × 438,087.80
  4. Step 4: Simplify right side
    513,320.60x = 336,935,999,315.58
  5. Step 5: Solve for x
    x = 336,935,999,315.58/513,320.60
  6. Step 6: Final answer
    x = 656,385.11

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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.