Home / 859,616.80-1,288,971.60-290,802.40

Finding the Fourth Proportional to 859,616.80, 1,288,971.60 and 290,802.40

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Solution

The fourth proportional to 859,616.80, 1,288,971.60 and 290,802.40 is: 436,050.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,616.80 : 1,288,971.60 = 290,802.40 : x
  2. Step 2: Convert to fraction form
    859,616.80/1,288,971.60 = 290,802.40/x
  3. Step 3: Cross multiply
    859,616.80x = 1,288,971.60 × 290,802.40
  4. Step 4: Simplify right side
    859,616.80x = 374,836,034,811.84
  5. Step 5: Solve for x
    x = 374,836,034,811.84/859,616.80
  6. Step 6: Final answer
    x = 436,050.15

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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.