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Finding the Fourth Proportional to 679,581.72, 937,846.85 and 373,681.40

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Solution

The fourth proportional to 679,581.72, 937,846.85 and 373,681.40 is: 515,693.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,581.72 : 937,846.85 = 373,681.40 : x
  2. Step 2: Convert to fraction form
    679,581.72/937,846.85 = 373,681.40/x
  3. Step 3: Cross multiply
    679,581.72x = 937,846.85 × 373,681.40
  4. Step 4: Simplify right side
    679,581.72x = 350,455,917,335.95
  5. Step 5: Solve for x
    x = 350,455,917,335.95/679,581.72
  6. Step 6: Final answer
    x = 515,693.56

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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.