Home / 687,753.84-1,031,663.56-288,407.64

Finding the Fourth Proportional to 687,753.84, 1,031,663.56 and 288,407.64

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Solution

The fourth proportional to 687,753.84, 1,031,663.56 and 288,407.64 is: 432,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,753.84 : 1,031,663.56 = 288,407.64 : x
  2. Step 2: Convert to fraction form
    687,753.84/1,031,663.56 = 288,407.64/x
  3. Step 3: Cross multiply
    687,753.84x = 1,031,663.56 × 288,407.64
  4. Step 4: Simplify right side
    687,753.84x = 297,539,652,613.60
  5. Step 5: Solve for x
    x = 297,539,652,613.60/687,753.84
  6. Step 6: Final answer
    x = 432,625.21

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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.