Home / 915,903.70-1,373,855.55-418,239.70

Finding the Fourth Proportional to 915,903.70, 1,373,855.55 and 418,239.70

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Solution

The fourth proportional to 915,903.70, 1,373,855.55 and 418,239.70 is: 627,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,903.70 : 1,373,855.55 = 418,239.70 : x
  2. Step 2: Convert to fraction form
    915,903.70/1,373,855.55 = 418,239.70/x
  3. Step 3: Cross multiply
    915,903.70x = 1,373,855.55 × 418,239.70
  4. Step 4: Simplify right side
    915,903.70x = 574,600,933,075.34
  5. Step 5: Solve for x
    x = 574,600,933,075.34/915,903.70
  6. Step 6: Final answer
    x = 627,359.55

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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.