Home / 1,287,811.17-1,931,715-489,091.23

Finding the Fourth Proportional to 1,287,811.17, 1,931,715 and 489,091.23

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Solution

The fourth proportional to 1,287,811.17, 1,931,715 and 489,091.23 is: 733,636.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,811.17 : 1,931,715 = 489,091.23 : x
  2. Step 2: Convert to fraction form
    1,287,811.17/1,931,715 = 489,091.23/x
  3. Step 3: Cross multiply
    1,287,811.17x = 1,931,715 × 489,091.23
  4. Step 4: Simplify right side
    1,287,811.17x = 944,784,865,359.45
  5. Step 5: Solve for x
    x = 944,784,865,359.45/1,287,811.17
  6. Step 6: Final answer
    x = 733,636.18

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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.