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Finding the Fourth Proportional to 719,348.66, 992,701.21 and 397,058.84

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Solution

The fourth proportional to 719,348.66, 992,701.21 and 397,058.84 is: 547,941.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,348.66 : 992,701.21 = 397,058.84 : x
  2. Step 2: Convert to fraction form
    719,348.66/992,701.21 = 397,058.84/x
  3. Step 3: Cross multiply
    719,348.66x = 992,701.21 × 397,058.84
  4. Step 4: Simplify right side
    719,348.66x = 394,160,794,383.60
  5. Step 5: Solve for x
    x = 394,160,794,383.60/719,348.66
  6. Step 6: Final answer
    x = 547,941.23

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Double scale
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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.