Home / 687,207.04-1,029,758.52-287,630.32

Finding the Fourth Proportional to 687,207.04, 1,029,758.52 and 287,630.32

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Solution

The fourth proportional to 687,207.04, 1,029,758.52 and 287,630.32 is: 431,005.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,207.04 : 1,029,758.52 = 287,630.32 : x
  2. Step 2: Convert to fraction form
    687,207.04/1,029,758.52 = 287,630.32/x
  3. Step 3: Cross multiply
    687,207.04x = 1,029,758.52 × 287,630.32
  4. Step 4: Simplify right side
    687,207.04x = 296,189,772,630.33
  5. Step 5: Solve for x
    x = 296,189,772,630.33/687,207.04
  6. Step 6: Final answer
    x = 431,005.15

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1.5x scale

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.