Home / 1,284,840.40-1,926,385.80-486,002.20

Finding the Fourth Proportional to 1,284,840.40, 1,926,385.80 and 486,002.20

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Solution

The fourth proportional to 1,284,840.40, 1,926,385.80 and 486,002.20 is: 728,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,840.40 : 1,926,385.80 = 486,002.20 : x
  2. Step 2: Convert to fraction form
    1,284,840.40/1,926,385.80 = 486,002.20/x
  3. Step 3: Cross multiply
    1,284,840.40x = 1,926,385.80 × 486,002.20
  4. Step 4: Simplify right side
    1,284,840.40x = 936,227,736,848.76
  5. Step 5: Solve for x
    x = 936,227,736,848.76/1,284,840.40
  6. Step 6: Final answer
    x = 728,672.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.