Home / 780,478.85-1,170,699.98-359,754.72

Finding the Fourth Proportional to 780,478.85, 1,170,699.98 and 359,754.72

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Solution

The fourth proportional to 780,478.85, 1,170,699.98 and 359,754.72 is: 539,623.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,478.85 : 1,170,699.98 = 359,754.72 : x
  2. Step 2: Convert to fraction form
    780,478.85/1,170,699.98 = 359,754.72/x
  3. Step 3: Cross multiply
    780,478.85x = 1,170,699.98 × 359,754.72
  4. Step 4: Simplify right side
    780,478.85x = 421,164,841,710.13
  5. Step 5: Solve for x
    x = 421,164,841,710.13/780,478.85
  6. Step 6: Final answer
    x = 539,623.65

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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.