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Finding the Fourth Proportional to 679,378.40, 937,553.84 and 373,467.66

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Solution

The fourth proportional to 679,378.40, 937,553.84 and 373,467.66 is: 515,391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,378.40 : 937,553.84 = 373,467.66 : x
  2. Step 2: Convert to fraction form
    679,378.40/937,553.84 = 373,467.66/x
  3. Step 3: Cross multiply
    679,378.40x = 937,553.84 × 373,467.66
  4. Step 4: Simplify right side
    679,378.40x = 350,146,036,881.48
  5. Step 5: Solve for x
    x = 350,146,036,881.48/679,378.40
  6. Step 6: Final answer
    x = 515,391.77

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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.