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Finding the Fourth Proportional to 459,007.70, 688,511.55 and 423,578.30

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Solution

The fourth proportional to 459,007.70, 688,511.55 and 423,578.30 is: 635,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,007.70 : 688,511.55 = 423,578.30 : x
  2. Step 2: Convert to fraction form
    459,007.70/688,511.55 = 423,578.30/x
  3. Step 3: Cross multiply
    459,007.70x = 688,511.55 × 423,578.30
  4. Step 4: Simplify right side
    459,007.70x = 291,638,551,879.37
  5. Step 5: Solve for x
    x = 291,638,551,879.37/459,007.70
  6. Step 6: Final answer
    x = 635,367.45

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Similar ratio
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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.