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Finding the Fourth Proportional to 722,351.70, 996,833.16 and 400,075.38

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Solution

The fourth proportional to 722,351.70, 996,833.16 and 400,075.38 is: 552,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,351.70 : 996,833.16 = 400,075.38 : x
  2. Step 2: Convert to fraction form
    722,351.70/996,833.16 = 400,075.38/x
  3. Step 3: Cross multiply
    722,351.70x = 996,833.16 × 400,075.38
  4. Step 4: Simplify right side
    722,351.70x = 398,808,405,283.60
  5. Step 5: Solve for x
    x = 398,808,405,283.60/722,351.70
  6. Step 6: Final answer
    x = 552,097.28

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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.