Home / 687,808.60-1,031,712.90-475,232.20

Finding the Fourth Proportional to 687,808.60, 1,031,712.90 and 475,232.20

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Solution

The fourth proportional to 687,808.60, 1,031,712.90 and 475,232.20 is: 712,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,808.60 : 1,031,712.90 = 475,232.20 : x
  2. Step 2: Convert to fraction form
    687,808.60/1,031,712.90 = 475,232.20/x
  3. Step 3: Cross multiply
    687,808.60x = 1,031,712.90 × 475,232.20
  4. Step 4: Simplify right side
    687,808.60x = 490,303,191,235.38
  5. Step 5: Solve for x
    x = 490,303,191,235.38/687,808.60
  6. Step 6: Final answer
    x = 712,848.30

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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.