Home / 876,660.50-1,209,779.62-489,481.92

Finding the Fourth Proportional to 876,660.50, 1,209,779.62 and 489,481.92

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Solution

The fourth proportional to 876,660.50, 1,209,779.62 and 489,481.92 is: 675,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,660.50 : 1,209,779.62 = 489,481.92 : x
  2. Step 2: Convert to fraction form
    876,660.50/1,209,779.62 = 489,481.92/x
  3. Step 3: Cross multiply
    876,660.50x = 1,209,779.62 × 489,481.92
  4. Step 4: Simplify right side
    876,660.50x = 592,165,249,950.77
  5. Step 5: Solve for x
    x = 592,165,249,950.77/876,660.50
  6. Step 6: Final answer
    x = 675,478.42

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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.