Home / 780,024.30-1,170,036.45-543,633.90

Finding the Fourth Proportional to 780,024.30, 1,170,036.45 and 543,633.90

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Solution

The fourth proportional to 780,024.30, 1,170,036.45 and 543,633.90 is: 815,450.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,024.30 : 1,170,036.45 = 543,633.90 : x
  2. Step 2: Convert to fraction form
    780,024.30/1,170,036.45 = 543,633.90/x
  3. Step 3: Cross multiply
    780,024.30x = 1,170,036.45 × 543,633.90
  4. Step 4: Simplify right side
    780,024.30x = 636,071,478,455.66
  5. Step 5: Solve for x
    x = 636,071,478,455.66/780,024.30
  6. Step 6: Final answer
    x = 815,450.85

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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.