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Finding the Fourth Proportional to 638,798.19, 958,861.88 and 470,508.54

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Solution

The fourth proportional to 638,798.19, 958,861.88 and 470,508.54 is: 706,252.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,798.19 : 958,861.88 = 470,508.54 : x
  2. Step 2: Convert to fraction form
    638,798.19/958,861.88 = 470,508.54/x
  3. Step 3: Cross multiply
    638,798.19x = 958,861.88 × 470,508.54
  4. Step 4: Simplify right side
    638,798.19x = 451,152,703,220.46
  5. Step 5: Solve for x
    x = 451,152,703,220.46/638,798.19
  6. Step 6: Final answer
    x = 706,252.32

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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.