Home / 780,050.70-1,170,404.10-425,319.30

Finding the Fourth Proportional to 780,050.70, 1,170,404.10 and 425,319.30

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Solution

The fourth proportional to 780,050.70, 1,170,404.10 and 425,319.30 is: 638,157.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,050.70 : 1,170,404.10 = 425,319.30 : x
  2. Step 2: Convert to fraction form
    780,050.70/1,170,404.10 = 425,319.30/x
  3. Step 3: Cross multiply
    780,050.70x = 1,170,404.10 × 425,319.30
  4. Step 4: Simplify right side
    780,050.70x = 497,795,452,529.13
  5. Step 5: Solve for x
    x = 497,795,452,529.13/780,050.70
  6. Step 6: Final answer
    x = 638,157.82

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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.