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Finding the Fourth Proportional to 847,299, 1,169,376.30 and 489,603

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Solution

The fourth proportional to 847,299, 1,169,376.30 and 489,603 is: 675,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,299 : 1,169,376.30 = 489,603 : x
  2. Step 2: Convert to fraction form
    847,299/1,169,376.30 = 489,603/x
  3. Step 3: Cross multiply
    847,299x = 1,169,376.30 × 489,603
  4. Step 4: Simplify right side
    847,299x = 572,530,144,608.90
  5. Step 5: Solve for x
    x = 572,530,144,608.90/847,299
  6. Step 6: Final answer
    x = 675,712.05

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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.