Home / 768,084.36-1,151,633.20-319,115.40

Finding the Fourth Proportional to 768,084.36, 1,151,633.20 and 319,115.40

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Solution

The fourth proportional to 768,084.36, 1,151,633.20 and 319,115.40 is: 478,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,084.36 : 1,151,633.20 = 319,115.40 : x
  2. Step 2: Convert to fraction form
    768,084.36/1,151,633.20 = 319,115.40/x
  3. Step 3: Cross multiply
    768,084.36x = 1,151,633.20 × 319,115.40
  4. Step 4: Simplify right side
    768,084.36x = 367,503,889,271.28
  5. Step 5: Solve for x
    x = 367,503,889,271.28/768,084.36
  6. Step 6: Final answer
    x = 478,468.13

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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.