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Finding the Fourth Proportional to 806,321.60, 1,208,445.60 and 618,401.60

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Solution

The fourth proportional to 806,321.60, 1,208,445.60 and 618,401.60 is: 926,807.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,321.60 : 1,208,445.60 = 618,401.60 : x
  2. Step 2: Convert to fraction form
    806,321.60/1,208,445.60 = 618,401.60/x
  3. Step 3: Cross multiply
    806,321.60x = 1,208,445.60 × 618,401.60
  4. Step 4: Simplify right side
    806,321.60x = 747,304,692,552.96
  5. Step 5: Solve for x
    x = 747,304,692,552.96/806,321.60
  6. Step 6: Final answer
    x = 926,807.23

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1.5x scale

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.