Home / 687,464.80-1,031,246.32-287,703.04

Finding the Fourth Proportional to 687,464.80, 1,031,246.32 and 287,703.04

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Solution

The fourth proportional to 687,464.80, 1,031,246.32 and 287,703.04 is: 431,575.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,464.80 : 1,031,246.32 = 287,703.04 : x
  2. Step 2: Convert to fraction form
    687,464.80/1,031,246.32 = 287,703.04/x
  3. Step 3: Cross multiply
    687,464.80x = 1,031,246.32 × 287,703.04
  4. Step 4: Simplify right side
    687,464.80x = 296,692,701,252.81
  5. Step 5: Solve for x
    x = 296,692,701,252.81/687,464.80
  6. Step 6: Final answer
    x = 431,575.12

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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.