Home / 1,288,100.40-1,931,567.40-489,116.40

Finding the Fourth Proportional to 1,288,100.40, 1,931,567.40 and 489,116.40

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Solution

The fourth proportional to 1,288,100.40, 1,931,567.40 and 489,116.40 is: 733,453.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,100.40 : 1,931,567.40 = 489,116.40 : x
  2. Step 2: Convert to fraction form
    1,288,100.40/1,931,567.40 = 489,116.40/x
  3. Step 3: Cross multiply
    1,288,100.40x = 1,931,567.40 × 489,116.40
  4. Step 4: Simplify right side
    1,288,100.40x = 944,761,293,045.36
  5. Step 5: Solve for x
    x = 944,761,293,045.36/1,288,100.40
  6. Step 6: Final answer
    x = 733,453.15

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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.