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Finding the Fourth Proportional to 707,673.28, 976,579.48 and 401,747.12

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Solution

The fourth proportional to 707,673.28, 976,579.48 and 401,747.12 is: 554,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,673.28 : 976,579.48 = 401,747.12 : x
  2. Step 2: Convert to fraction form
    707,673.28/976,579.48 = 401,747.12/x
  3. Step 3: Cross multiply
    707,673.28x = 976,579.48 × 401,747.12
  4. Step 4: Simplify right side
    707,673.28x = 392,337,993,541.10
  5. Step 5: Solve for x
    x = 392,337,993,541.10/707,673.28
  6. Step 6: Final answer
    x = 554,405.55

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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.