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Finding the Fourth Proportional to 719,334.16, 992,681.22 and 397,044.34

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Solution

The fourth proportional to 719,334.16, 992,681.22 and 397,044.34 is: 547,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,334.16 : 992,681.22 = 397,044.34 : x
  2. Step 2: Convert to fraction form
    719,334.16/992,681.22 = 397,044.34/x
  3. Step 3: Cross multiply
    719,334.16x = 992,681.22 × 397,044.34
  4. Step 4: Simplify right side
    719,334.16x = 394,138,458,832.51
  5. Step 5: Solve for x
    x = 394,138,458,832.51/719,334.16
  6. Step 6: Final answer
    x = 547,921.23

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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.