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Finding the Fourth Proportional to 763,446.03, 1,053,603 and 423,916.71

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Solution

The fourth proportional to 763,446.03, 1,053,603 and 423,916.71 is: 585,031.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,446.03 : 1,053,603 = 423,916.71 : x
  2. Step 2: Convert to fraction form
    763,446.03/1,053,603 = 423,916.71/x
  3. Step 3: Cross multiply
    763,446.03x = 1,053,603 × 423,916.71
  4. Step 4: Simplify right side
    763,446.03x = 446,639,917,406.13
  5. Step 5: Solve for x
    x = 446,639,917,406.13/763,446.03
  6. Step 6: Final answer
    x = 585,031.42

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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.