Home / 698,643.60-1,047,965.40-486,067.20

Finding the Fourth Proportional to 698,643.60, 1,047,965.40 and 486,067.20

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Solution

The fourth proportional to 698,643.60, 1,047,965.40 and 486,067.20 is: 729,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,643.60 : 1,047,965.40 = 486,067.20 : x
  2. Step 2: Convert to fraction form
    698,643.60/1,047,965.40 = 486,067.20/x
  3. Step 3: Cross multiply
    698,643.60x = 1,047,965.40 × 486,067.20
  4. Step 4: Simplify right side
    698,643.60x = 509,381,607,674.88
  5. Step 5: Solve for x
    x = 509,381,607,674.88/698,643.60
  6. Step 6: Final answer
    x = 729,100.80

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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.