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Finding the Fourth Proportional to 1,299,201.78, 1,948,769.87 and 352,547.90

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Solution

The fourth proportional to 1,299,201.78, 1,948,769.87 and 352,547.90 is: 528,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,201.78 : 1,948,769.87 = 352,547.90 : x
  2. Step 2: Convert to fraction form
    1,299,201.78/1,948,769.87 = 352,547.90/x
  3. Step 3: Cross multiply
    1,299,201.78x = 1,948,769.87 × 352,547.90
  4. Step 4: Simplify right side
    1,299,201.78x = 687,034,713,745.18
  5. Step 5: Solve for x
    x = 687,034,713,745.18/1,299,201.78
  6. Step 6: Final answer
    x = 528,812.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.