Home / 839,602.40-1,259,403.60-440,088.80

Finding the Fourth Proportional to 839,602.40, 1,259,403.60 and 440,088.80

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Solution

The fourth proportional to 839,602.40, 1,259,403.60 and 440,088.80 is: 660,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,602.40 : 1,259,403.60 = 440,088.80 : x
  2. Step 2: Convert to fraction form
    839,602.40/1,259,403.60 = 440,088.80/x
  3. Step 3: Cross multiply
    839,602.40x = 1,259,403.60 × 440,088.80
  4. Step 4: Simplify right side
    839,602.40x = 554,249,419,039.68
  5. Step 5: Solve for x
    x = 554,249,419,039.68/839,602.40
  6. Step 6: Final answer
    x = 660,133.20

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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.