Home / 768,278.70-1,152,418.06-207,312.30

Finding the Fourth Proportional to 768,278.70, 1,152,418.06 and 207,312.30

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Solution

The fourth proportional to 768,278.70, 1,152,418.06 and 207,312.30 is: 310,968.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,278.70 : 1,152,418.06 = 207,312.30 : x
  2. Step 2: Convert to fraction form
    768,278.70/1,152,418.06 = 207,312.30/x
  3. Step 3: Cross multiply
    768,278.70x = 1,152,418.06 × 207,312.30
  4. Step 4: Simplify right side
    768,278.70x = 238,910,438,580.14
  5. Step 5: Solve for x
    x = 238,910,438,580.14/768,278.70
  6. Step 6: Final answer
    x = 310,968.45

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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.