Home / 679,721.02-937,749.51-389,177.30

Finding the Fourth Proportional to 679,721.02, 937,749.51 and 389,177.30

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Solution

The fourth proportional to 679,721.02, 937,749.51 and 389,177.30 is: 536,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,721.02 : 937,749.51 = 389,177.30 : x
  2. Step 2: Convert to fraction form
    679,721.02/937,749.51 = 389,177.30/x
  3. Step 3: Cross multiply
    679,721.02x = 937,749.51 × 389,177.30
  4. Step 4: Simplify right side
    679,721.02x = 364,950,822,378.12
  5. Step 5: Solve for x
    x = 364,950,822,378.12/679,721.02
  6. Step 6: Final answer
    x = 536,912.66

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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.