Home / 989,780.34-1,484,696.30-315,860.73

Finding the Fourth Proportional to 989,780.34, 1,484,696.30 and 315,860.73

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Solution

The fourth proportional to 989,780.34, 1,484,696.30 and 315,860.73 is: 473,799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,780.34 : 1,484,696.30 = 315,860.73 : x
  2. Step 2: Convert to fraction form
    989,780.34/1,484,696.30 = 315,860.73/x
  3. Step 3: Cross multiply
    989,780.34x = 1,484,696.30 × 315,860.73
  4. Step 4: Simplify right side
    989,780.34x = 468,957,257,146.30
  5. Step 5: Solve for x
    x = 468,957,257,146.30/989,780.34
  6. Step 6: Final answer
    x = 473,799.33

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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.