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Finding the Fourth Proportional to 763,336.72, 1,053,437.58 and 423,805

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Solution

The fourth proportional to 763,336.72, 1,053,437.58 and 423,805 is: 584,869.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,336.72 : 1,053,437.58 = 423,805 : x
  2. Step 2: Convert to fraction form
    763,336.72/1,053,437.58 = 423,805/x
  3. Step 3: Cross multiply
    763,336.72x = 1,053,437.58 × 423,805
  4. Step 4: Simplify right side
    763,336.72x = 446,452,113,591.90
  5. Step 5: Solve for x
    x = 446,452,113,591.90/763,336.72
  6. Step 6: Final answer
    x = 584,869.17

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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.