Home / 780,278.40-1,170,184.32-406,097.28

Finding the Fourth Proportional to 780,278.40, 1,170,184.32 and 406,097.28

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Solution

The fourth proportional to 780,278.40, 1,170,184.32 and 406,097.28 is: 609,024.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,278.40 : 1,170,184.32 = 406,097.28 : x
  2. Step 2: Convert to fraction form
    780,278.40/1,170,184.32 = 406,097.28/x
  3. Step 3: Cross multiply
    780,278.40x = 1,170,184.32 × 406,097.28
  4. Step 4: Simplify right side
    780,278.40x = 475,208,669,450.65
  5. Step 5: Solve for x
    x = 475,208,669,450.65/780,278.40
  6. Step 6: Final answer
    x = 609,024.51

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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.