Home / 909,118.08-1,253,278.89-715,188.72

Finding the Fourth Proportional to 909,118.08, 1,253,278.89 and 715,188.72

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Solution

The fourth proportional to 909,118.08, 1,253,278.89 and 715,188.72 is: 985,934.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,118.08 : 1,253,278.89 = 715,188.72 : x
  2. Step 2: Convert to fraction form
    909,118.08/1,253,278.89 = 715,188.72/x
  3. Step 3: Cross multiply
    909,118.08x = 1,253,278.89 × 715,188.72
  4. Step 4: Simplify right side
    909,118.08x = 896,330,929,906.59
  5. Step 5: Solve for x
    x = 896,330,929,906.59/909,118.08
  6. Step 6: Final answer
    x = 985,934.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.