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Finding the Fourth Proportional to 806,860.80, 1,209,772.80 and 333,734.40

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Solution

The fourth proportional to 806,860.80, 1,209,772.80 and 333,734.40 is: 500,387.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,860.80 : 1,209,772.80 = 333,734.40 : x
  2. Step 2: Convert to fraction form
    806,860.80/1,209,772.80 = 333,734.40/x
  3. Step 3: Cross multiply
    806,860.80x = 1,209,772.80 × 333,734.40
  4. Step 4: Simplify right side
    806,860.80x = 403,742,799,544.32
  5. Step 5: Solve for x
    x = 403,742,799,544.32/806,860.80
  6. Step 6: Final answer
    x = 500,387.18

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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.