Home / 690,918.66-953,442.90-384,979.23

Finding the Fourth Proportional to 690,918.66, 953,442.90 and 384,979.23

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Solution

The fourth proportional to 690,918.66, 953,442.90 and 384,979.23 is: 531,257.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,918.66 : 953,442.90 = 384,979.23 : x
  2. Step 2: Convert to fraction form
    690,918.66/953,442.90 = 384,979.23/x
  3. Step 3: Cross multiply
    690,918.66x = 953,442.90 × 384,979.23
  4. Step 4: Simplify right side
    690,918.66x = 367,055,713,490.97
  5. Step 5: Solve for x
    x = 367,055,713,490.97/690,918.66
  6. Step 6: Final answer
    x = 531,257.49

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1.5x scale

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.