Home / 687,795.60-1,031,693.40-475,219.20

Finding the Fourth Proportional to 687,795.60, 1,031,693.40 and 475,219.20

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Solution

The fourth proportional to 687,795.60, 1,031,693.40 and 475,219.20 is: 712,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,795.60 : 1,031,693.40 = 475,219.20 : x
  2. Step 2: Convert to fraction form
    687,795.60/1,031,693.40 = 475,219.20/x
  3. Step 3: Cross multiply
    687,795.60x = 1,031,693.40 × 475,219.20
  4. Step 4: Simplify right side
    687,795.60x = 490,280,512,193.28
  5. Step 5: Solve for x
    x = 490,280,512,193.28/687,795.60
  6. Step 6: Final answer
    x = 712,828.80

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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.