Home / 897,864.85-1,239,079.89-489,993.10

Finding the Fourth Proportional to 897,864.85, 1,239,079.89 and 489,993.10

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Solution

The fourth proportional to 897,864.85, 1,239,079.89 and 489,993.10 is: 676,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,864.85 : 1,239,079.89 = 489,993.10 : x
  2. Step 2: Convert to fraction form
    897,864.85/1,239,079.89 = 489,993.10/x
  3. Step 3: Cross multiply
    897,864.85x = 1,239,079.89 × 489,993.10
  4. Step 4: Simplify right side
    897,864.85x = 607,140,596,448.76
  5. Step 5: Solve for x
    x = 607,140,596,448.76/897,864.85
  6. Step 6: Final answer
    x = 676,204.88

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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.