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Finding the Fourth Proportional to 3,146,411.29, 4,719,603.47 and 871,929.20

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Solution

The fourth proportional to 3,146,411.29, 4,719,603.47 and 871,929.20 is: 1,307,890.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146,411.29 : 4,719,603.47 = 871,929.20 : x
  2. Step 2: Convert to fraction form
    3,146,411.29/4,719,603.47 = 871,929.20/x
  3. Step 3: Cross multiply
    3,146,411.29x = 4,719,603.47 × 871,929.20
  4. Step 4: Simplify right side
    3,146,411.29x = 4,115,160,077,914.32
  5. Step 5: Solve for x
    x = 4,115,160,077,914.32/3,146,411.29
  6. Step 6: Final answer
    x = 1,307,890.07

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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.