Home / 666,305.81-919,502.18-375,979.01

Finding the Fourth Proportional to 666,305.81, 919,502.18 and 375,979.01

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Solution

The fourth proportional to 666,305.81, 919,502.18 and 375,979.01 is: 518,851.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,305.81 : 919,502.18 = 375,979.01 : x
  2. Step 2: Convert to fraction form
    666,305.81/919,502.18 = 375,979.01/x
  3. Step 3: Cross multiply
    666,305.81x = 919,502.18 × 375,979.01
  4. Step 4: Simplify right side
    666,305.81x = 345,713,519,329.24
  5. Step 5: Solve for x
    x = 345,713,519,329.24/666,305.81
  6. Step 6: Final answer
    x = 518,851.13

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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.