Home / 897,310.89-1,238,303.79-489,412.74

Finding the Fourth Proportional to 897,310.89, 1,238,303.79 and 489,412.74

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Solution

The fourth proportional to 897,310.89, 1,238,303.79 and 489,412.74 is: 675,397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,310.89 : 1,238,303.79 = 489,412.74 : x
  2. Step 2: Convert to fraction form
    897,310.89/1,238,303.79 = 489,412.74/x
  3. Step 3: Cross multiply
    897,310.89x = 1,238,303.79 × 489,412.74
  4. Step 4: Simplify right side
    897,310.89x = 606,041,650,816.29
  5. Step 5: Solve for x
    x = 606,041,650,816.29/897,310.89
  6. Step 6: Final answer
    x = 675,397.63

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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.