Home / 780,047.80-1,170,071.70-442,958.20

Finding the Fourth Proportional to 780,047.80, 1,170,071.70 and 442,958.20

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Solution

The fourth proportional to 780,047.80, 1,170,071.70 and 442,958.20 is: 664,437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,047.80 : 1,170,071.70 = 442,958.20 : x
  2. Step 2: Convert to fraction form
    780,047.80/1,170,071.70 = 442,958.20/x
  3. Step 3: Cross multiply
    780,047.80x = 1,170,071.70 × 442,958.20
  4. Step 4: Simplify right side
    780,047.80x = 518,292,854,102.94
  5. Step 5: Solve for x
    x = 518,292,854,102.94/780,047.80
  6. Step 6: Final answer
    x = 664,437.30

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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.