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Finding the Fourth Proportional to 989,641.80, 1,482,713.10 and 877,667.40

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Solution

The fourth proportional to 989,641.80, 1,482,713.10 and 877,667.40 is: 1,314,949.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,641.80 : 1,482,713.10 = 877,667.40 : x
  2. Step 2: Convert to fraction form
    989,641.80/1,482,713.10 = 877,667.40/x
  3. Step 3: Cross multiply
    989,641.80x = 1,482,713.10 × 877,667.40
  4. Step 4: Simplify right side
    989,641.80x = 1,301,328,951,422.94
  5. Step 5: Solve for x
    x = 1,301,328,951,422.94/989,641.80
  6. Step 6: Final answer
    x = 1,314,949.46

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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.