Home / 687,756.02-1,031,302.22-288,289.53

Finding the Fourth Proportional to 687,756.02, 1,031,302.22 and 288,289.53

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Solution

The fourth proportional to 687,756.02, 1,031,302.22 and 288,289.53 is: 432,295.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,756.02 : 1,031,302.22 = 288,289.53 : x
  2. Step 2: Convert to fraction form
    687,756.02/1,031,302.22 = 288,289.53/x
  3. Step 3: Cross multiply
    687,756.02x = 1,031,302.22 × 288,289.53
  4. Step 4: Simplify right side
    687,756.02x = 297,313,630,850.31
  5. Step 5: Solve for x
    x = 297,313,630,850.31/687,756.02
  6. Step 6: Final answer
    x = 432,295.21

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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.