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Finding the Fourth Proportional to 719,952.70, 993,450.07 and 397,643.57

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Solution

The fourth proportional to 719,952.70, 993,450.07 and 397,643.57 is: 548,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,952.70 : 993,450.07 = 397,643.57 : x
  2. Step 2: Convert to fraction form
    719,952.70/993,450.07 = 397,643.57/x
  3. Step 3: Cross multiply
    719,952.70x = 993,450.07 × 397,643.57
  4. Step 4: Simplify right side
    719,952.70x = 395,039,033,569.51
  5. Step 5: Solve for x
    x = 395,039,033,569.51/719,952.70
  6. Step 6: Final answer
    x = 548,701.37

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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.