Home / 897,860.20-1,239,039.30-489,970.12

Finding the Fourth Proportional to 897,860.20, 1,239,039.30 and 489,970.12

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Solution

The fourth proportional to 897,860.20, 1,239,039.30 and 489,970.12 is: 676,154.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,860.20 : 1,239,039.30 = 489,970.12 : x
  2. Step 2: Convert to fraction form
    897,860.20/1,239,039.30 = 489,970.12/x
  3. Step 3: Cross multiply
    897,860.20x = 1,239,039.30 × 489,970.12
  4. Step 4: Simplify right side
    897,860.20x = 607,092,234,505.72
  5. Step 5: Solve for x
    x = 607,092,234,505.72/897,860.20
  6. Step 6: Final answer
    x = 676,154.52

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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.