Home / 638,897.65-881,695.39-348,514.13

Finding the Fourth Proportional to 638,897.65, 881,695.39 and 348,514.13

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Solution

The fourth proportional to 638,897.65, 881,695.39 and 348,514.13 is: 480,958.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,897.65 : 881,695.39 = 348,514.13 : x
  2. Step 2: Convert to fraction form
    638,897.65/881,695.39 = 348,514.13/x
  3. Step 3: Cross multiply
    638,897.65x = 881,695.39 × 348,514.13
  4. Step 4: Simplify right side
    638,897.65x = 307,283,303,007.49
  5. Step 5: Solve for x
    x = 307,283,303,007.49/638,897.65
  6. Step 6: Final answer
    x = 480,958.57

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Double scale
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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.