Home / 910,643.40-1,365,965.10-279,475.20

Finding the Fourth Proportional to 910,643.40, 1,365,965.10 and 279,475.20

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Solution

The fourth proportional to 910,643.40, 1,365,965.10 and 279,475.20 is: 419,212.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,643.40 : 1,365,965.10 = 279,475.20 : x
  2. Step 2: Convert to fraction form
    910,643.40/1,365,965.10 = 279,475.20/x
  3. Step 3: Cross multiply
    910,643.40x = 1,365,965.10 × 279,475.20
  4. Step 4: Simplify right side
    910,643.40x = 381,753,369,515.52
  5. Step 5: Solve for x
    x = 381,753,369,515.52/910,643.40
  6. Step 6: Final answer
    x = 419,212.80

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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.