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Finding the Fourth Proportional to 763,366.72, 1,053,478.98 and 423,835

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Solution

The fourth proportional to 763,366.72, 1,053,478.98 and 423,835 is: 584,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,366.72 : 1,053,478.98 = 423,835 : x
  2. Step 2: Convert to fraction form
    763,366.72/1,053,478.98 = 423,835/x
  3. Step 3: Cross multiply
    763,366.72x = 1,053,478.98 × 423,835
  4. Step 4: Simplify right side
    763,366.72x = 446,501,263,488.30
  5. Step 5: Solve for x
    x = 446,501,263,488.30/763,366.72
  6. Step 6: Final answer
    x = 584,910.57

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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.