Home / 1,218,658.40-1,681,728.03-674,782.50

Finding the Fourth Proportional to 1,218,658.40, 1,681,728.03 and 674,782.50

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Solution

The fourth proportional to 1,218,658.40, 1,681,728.03 and 674,782.50 is: 931,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,658.40 : 1,681,728.03 = 674,782.50 : x
  2. Step 2: Convert to fraction form
    1,218,658.40/1,681,728.03 = 674,782.50/x
  3. Step 3: Cross multiply
    1,218,658.40x = 1,681,728.03 × 674,782.50
  4. Step 4: Simplify right side
    1,218,658.40x = 1,134,800,644,403.48
  5. Step 5: Solve for x
    x = 1,134,800,644,403.48/1,218,658.40
  6. Step 6: Final answer
    x = 931,188.47

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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.