Home / 687,576.30-1,031,364.45-628,478.70

Finding the Fourth Proportional to 687,576.30, 1,031,364.45 and 628,478.70

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Solution

The fourth proportional to 687,576.30, 1,031,364.45 and 628,478.70 is: 942,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,576.30 : 1,031,364.45 = 628,478.70 : x
  2. Step 2: Convert to fraction form
    687,576.30/1,031,364.45 = 628,478.70/x
  3. Step 3: Cross multiply
    687,576.30x = 1,031,364.45 × 628,478.70
  4. Step 4: Simplify right side
    687,576.30x = 648,190,588,762.22
  5. Step 5: Solve for x
    x = 648,190,588,762.22/687,576.30
  6. Step 6: Final answer
    x = 942,718.05

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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.