Home / 839,929.80-1,259,894.70-307,504.65

Finding the Fourth Proportional to 839,929.80, 1,259,894.70 and 307,504.65

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Solution

The fourth proportional to 839,929.80, 1,259,894.70 and 307,504.65 is: 461,256.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,929.80 : 1,259,894.70 = 307,504.65 : x
  2. Step 2: Convert to fraction form
    839,929.80/1,259,894.70 = 307,504.65/x
  3. Step 3: Cross multiply
    839,929.80x = 1,259,894.70 × 307,504.65
  4. Step 4: Simplify right side
    839,929.80x = 387,423,478,760.36
  5. Step 5: Solve for x
    x = 387,423,478,760.36/839,929.80
  6. Step 6: Final answer
    x = 461,256.98

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Double scale
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Similar ratio
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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.