Home / 1,645,138.65-2,270,275.78-919,978.05

Finding the Fourth Proportional to 1,645,138.65, 2,270,275.78 and 919,978.05

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Solution

The fourth proportional to 1,645,138.65, 2,270,275.78 and 919,978.05 is: 1,269,561.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645,138.65 : 2,270,275.78 = 919,978.05 : x
  2. Step 2: Convert to fraction form
    1,645,138.65/2,270,275.78 = 919,978.05/x
  3. Step 3: Cross multiply
    1,645,138.65x = 2,270,275.78 × 919,978.05
  4. Step 4: Simplify right side
    1,645,138.65x = 2,088,603,885,046.63
  5. Step 5: Solve for x
    x = 2,088,603,885,046.63/1,645,138.65
  6. Step 6: Final answer
    x = 1,269,561.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.