Home / 910,910.40-1,364,178.60-489,256.80

Finding the Fourth Proportional to 910,910.40, 1,364,178.60 and 489,256.80

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Solution

The fourth proportional to 910,910.40, 1,364,178.60 and 489,256.80 is: 732,710.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,910.40 : 1,364,178.60 = 489,256.80 : x
  2. Step 2: Convert to fraction form
    910,910.40/1,364,178.60 = 489,256.80/x
  3. Step 3: Cross multiply
    910,910.40x = 1,364,178.60 × 489,256.80
  4. Step 4: Simplify right side
    910,910.40x = 667,433,656,464.48
  5. Step 5: Solve for x
    x = 667,433,656,464.48/910,910.40
  6. Step 6: Final answer
    x = 732,710.55

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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.