Home / 687,778.60-1,031,667.90-475,202.20

Finding the Fourth Proportional to 687,778.60, 1,031,667.90 and 475,202.20

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Solution

The fourth proportional to 687,778.60, 1,031,667.90 and 475,202.20 is: 712,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,778.60 : 1,031,667.90 = 475,202.20 : x
  2. Step 2: Convert to fraction form
    687,778.60/1,031,667.90 = 475,202.20/x
  3. Step 3: Cross multiply
    687,778.60x = 1,031,667.90 × 475,202.20
  4. Step 4: Simplify right side
    687,778.60x = 490,250,855,749.38
  5. Step 5: Solve for x
    x = 490,250,855,749.38/687,778.60
  6. Step 6: Final answer
    x = 712,803.30

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1.5x scale

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.