Home / 718,122.60-1,075,110.30-438,186.60

Finding the Fourth Proportional to 718,122.60, 1,075,110.30 and 438,186.60

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Solution

The fourth proportional to 718,122.60, 1,075,110.30 and 438,186.60 is: 656,014.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,122.60 : 1,075,110.30 = 438,186.60 : x
  2. Step 2: Convert to fraction form
    718,122.60/1,075,110.30 = 438,186.60/x
  3. Step 3: Cross multiply
    718,122.60x = 1,075,110.30 × 438,186.60
  4. Step 4: Simplify right side
    718,122.60x = 471,098,926,981.98
  5. Step 5: Solve for x
    x = 471,098,926,981.98/718,122.60
  6. Step 6: Final answer
    x = 656,014.62

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1.5x scale

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.