Home / 891,143.12-1,336,842.04-291,976.40

Finding the Fourth Proportional to 891,143.12, 1,336,842.04 and 291,976.40

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Solution

The fourth proportional to 891,143.12, 1,336,842.04 and 291,976.40 is: 438,006.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,143.12 : 1,336,842.04 = 291,976.40 : x
  2. Step 2: Convert to fraction form
    891,143.12/1,336,842.04 = 291,976.40/x
  3. Step 3: Cross multiply
    891,143.12x = 1,336,842.04 × 291,976.40
  4. Step 4: Simplify right side
    891,143.12x = 390,326,326,207.86
  5. Step 5: Solve for x
    x = 390,326,326,207.86/891,143.12
  6. Step 6: Final answer
    x = 438,006.33

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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.