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Finding the Fourth Proportional to 710,728.36, 981,081.66 and 481,173.40

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Solution

The fourth proportional to 710,728.36, 981,081.66 and 481,173.40 is: 664,206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,728.36 : 981,081.66 = 481,173.40 : x
  2. Step 2: Convert to fraction form
    710,728.36/981,081.66 = 481,173.40/x
  3. Step 3: Cross multiply
    710,728.36x = 981,081.66 × 481,173.40
  4. Step 4: Simplify right side
    710,728.36x = 472,070,398,019.84
  5. Step 5: Solve for x
    x = 472,070,398,019.84/710,728.36
  6. Step 6: Final answer
    x = 664,206.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.