Home / 767,830.68-1,151,253.92-318,861.45

Finding the Fourth Proportional to 767,830.68, 1,151,253.92 and 318,861.45

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Solution

The fourth proportional to 767,830.68, 1,151,253.92 and 318,861.45 is: 478,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,830.68 : 1,151,253.92 = 318,861.45 : x
  2. Step 2: Convert to fraction form
    767,830.68/1,151,253.92 = 318,861.45/x
  3. Step 3: Cross multiply
    767,830.68x = 1,151,253.92 × 318,861.45
  4. Step 4: Simplify right side
    767,830.68x = 367,090,492,655.08
  5. Step 5: Solve for x
    x = 367,090,492,655.08/767,830.68
  6. Step 6: Final answer
    x = 478,087.82

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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.