Home / 780,047.70-1,170,399.60-425,316.30

Finding the Fourth Proportional to 780,047.70, 1,170,399.60 and 425,316.30

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Solution

The fourth proportional to 780,047.70, 1,170,399.60 and 425,316.30 is: 638,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,047.70 : 1,170,399.60 = 425,316.30 : x
  2. Step 2: Convert to fraction form
    780,047.70/1,170,399.60 = 425,316.30/x
  3. Step 3: Cross multiply
    780,047.70x = 1,170,399.60 × 425,316.30
  4. Step 4: Simplify right side
    780,047.70x = 497,790,027,393.48
  5. Step 5: Solve for x
    x = 497,790,027,393.48/780,047.70
  6. Step 6: Final answer
    x = 638,153.32

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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.