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Finding the Fourth Proportional to 719,257.42, 992,570.35 and 396,967.51

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Solution

The fourth proportional to 719,257.42, 992,570.35 and 396,967.51 is: 547,812.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,257.42 : 992,570.35 = 396,967.51 : x
  2. Step 2: Convert to fraction form
    719,257.42/992,570.35 = 396,967.51/x
  3. Step 3: Cross multiply
    719,257.42x = 992,570.35 × 396,967.51
  4. Step 4: Simplify right side
    719,257.42x = 394,018,176,865.48
  5. Step 5: Solve for x
    x = 394,018,176,865.48/719,257.42
  6. Step 6: Final answer
    x = 547,812.46

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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.