Home / 639,502.47-882,513.56-353,022.75

Finding the Fourth Proportional to 639,502.47, 882,513.56 and 353,022.75

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Solution

The fourth proportional to 639,502.47, 882,513.56 and 353,022.75 is: 487,171.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,502.47 : 882,513.56 = 353,022.75 : x
  2. Step 2: Convert to fraction form
    639,502.47/882,513.56 = 353,022.75/x
  3. Step 3: Cross multiply
    639,502.47x = 882,513.56 × 353,022.75
  4. Step 4: Simplify right side
    639,502.47x = 311,547,364,746.05
  5. Step 5: Solve for x
    x = 311,547,364,746.05/639,502.47
  6. Step 6: Final answer
    x = 487,171.48

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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.