Home / 687,807.60-1,031,711.40-475,231.20

Finding the Fourth Proportional to 687,807.60, 1,031,711.40 and 475,231.20

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Solution

The fourth proportional to 687,807.60, 1,031,711.40 and 475,231.20 is: 712,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,807.60 : 1,031,711.40 = 475,231.20 : x
  2. Step 2: Convert to fraction form
    687,807.60/1,031,711.40 = 475,231.20/x
  3. Step 3: Cross multiply
    687,807.60x = 1,031,711.40 × 475,231.20
  4. Step 4: Simplify right side
    687,807.60x = 490,301,446,675.68
  5. Step 5: Solve for x
    x = 490,301,446,675.68/687,807.60
  6. Step 6: Final answer
    x = 712,846.80

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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.