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Finding the Fourth Proportional to 710,964.45, 981,142.65 and 424,509.57

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Solution

The fourth proportional to 710,964.45, 981,142.65 and 424,509.57 is: 585,830.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,964.45 : 981,142.65 = 424,509.57 : x
  2. Step 2: Convert to fraction form
    710,964.45/981,142.65 = 424,509.57/x
  3. Step 3: Cross multiply
    710,964.45x = 981,142.65 × 424,509.57
  4. Step 4: Simplify right side
    710,964.45x = 416,504,444,460.16
  5. Step 5: Solve for x
    x = 416,504,444,460.16/710,964.45
  6. Step 6: Final answer
    x = 585,830.20

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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.