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Finding the Fourth Proportional to 679,042.64, 937,078.62 and 373,138.73

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Solution

The fourth proportional to 679,042.64, 937,078.62 and 373,138.73 is: 514,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,042.64 : 937,078.62 = 373,138.73 : x
  2. Step 2: Convert to fraction form
    679,042.64/937,078.62 = 373,138.73/x
  3. Step 3: Cross multiply
    679,042.64x = 937,078.62 × 373,138.73
  4. Step 4: Simplify right side
    679,042.64x = 349,660,321,491.56
  5. Step 5: Solve for x
    x = 349,660,321,491.56/679,042.64
  6. Step 6: Final answer
    x = 514,931.32

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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.