Home / 804,921.20-1,208,159.40-489,993.20

Finding the Fourth Proportional to 804,921.20, 1,208,159.40 and 489,993.20

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Solution

The fourth proportional to 804,921.20, 1,208,159.40 and 489,993.20 is: 735,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,921.20 : 1,208,159.40 = 489,993.20 : x
  2. Step 2: Convert to fraction form
    804,921.20/1,208,159.40 = 489,993.20/x
  3. Step 3: Cross multiply
    804,921.20x = 1,208,159.40 × 489,993.20
  4. Step 4: Simplify right side
    804,921.20x = 591,989,890,516.08
  5. Step 5: Solve for x
    x = 591,989,890,516.08/804,921.20
  6. Step 6: Final answer
    x = 735,463.16

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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.