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Finding the Fourth Proportional to 618,367.32, 853,371.38 and 346,437.45

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Solution

The fourth proportional to 618,367.32, 853,371.38 and 346,437.45 is: 478,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,367.32 : 853,371.38 = 346,437.45 : x
  2. Step 2: Convert to fraction form
    618,367.32/853,371.38 = 346,437.45/x
  3. Step 3: Cross multiply
    618,367.32x = 853,371.38 × 346,437.45
  4. Step 4: Simplify right side
    618,367.32x = 295,639,805,656.28
  5. Step 5: Solve for x
    x = 295,639,805,656.28/618,367.32
  6. Step 6: Final answer
    x = 478,097.40

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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.