Home / 839,434.59-1,259,523.68-439,980.39

Finding the Fourth Proportional to 839,434.59, 1,259,523.68 and 439,980.39

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Solution

The fourth proportional to 839,434.59, 1,259,523.68 and 439,980.39 is: 660,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,434.59 : 1,259,523.68 = 439,980.39 : x
  2. Step 2: Convert to fraction form
    839,434.59/1,259,523.68 = 439,980.39/x
  3. Step 3: Cross multiply
    839,434.59x = 1,259,523.68 × 439,980.39
  4. Step 4: Simplify right side
    839,434.59x = 554,165,717,740.73
  5. Step 5: Solve for x
    x = 554,165,717,740.73/839,434.59
  6. Step 6: Final answer
    x = 660,165.45

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Double scale
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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.