Home / 687,758.02-1,031,305.21-288,291.53

Finding the Fourth Proportional to 687,758.02, 1,031,305.21 and 288,291.53

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Solution

The fourth proportional to 687,758.02, 1,031,305.21 and 288,291.53 is: 432,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,758.02 : 1,031,305.21 = 288,291.53 : x
  2. Step 2: Convert to fraction form
    687,758.02/1,031,305.21 = 288,291.53/x
  3. Step 3: Cross multiply
    687,758.02x = 1,031,305.21 × 288,291.53
  4. Step 4: Simplify right side
    687,758.02x = 297,316,556,887.87
  5. Step 5: Solve for x
    x = 297,316,556,887.87/687,758.02
  6. Step 6: Final answer
    x = 432,298.20

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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.