Home / 644,176.25-966,258.18-391,526.45

Finding the Fourth Proportional to 644,176.25, 966,258.18 and 391,526.45

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Solution

The fourth proportional to 644,176.25, 966,258.18 and 391,526.45 is: 587,285.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,176.25 : 966,258.18 = 391,526.45 : x
  2. Step 2: Convert to fraction form
    644,176.25/966,258.18 = 391,526.45/x
  3. Step 3: Cross multiply
    644,176.25x = 966,258.18 × 391,526.45
  4. Step 4: Simplify right side
    644,176.25x = 378,315,630,167.57
  5. Step 5: Solve for x
    x = 378,315,630,167.57/644,176.25
  6. Step 6: Final answer
    x = 587,285.91

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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.