Home / 690,486.42-1,035,729.71-210,716.74

Finding the Fourth Proportional to 690,486.42, 1,035,729.71 and 210,716.74

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Solution

The fourth proportional to 690,486.42, 1,035,729.71 and 210,716.74 is: 316,075.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,486.42 : 1,035,729.71 = 210,716.74 : x
  2. Step 2: Convert to fraction form
    690,486.42/1,035,729.71 = 210,716.74/x
  3. Step 3: Cross multiply
    690,486.42x = 1,035,729.71 × 210,716.74
  4. Step 4: Simplify right side
    690,486.42x = 218,245,588,012.35
  5. Step 5: Solve for x
    x = 218,245,588,012.35/690,486.42
  6. Step 6: Final answer
    x = 316,075.13

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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.