Home / 890,678.75-1,229,214.44-488,348.51

Finding the Fourth Proportional to 890,678.75, 1,229,214.44 and 488,348.51

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Solution

The fourth proportional to 890,678.75, 1,229,214.44 and 488,348.51 is: 673,963.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,678.75 : 1,229,214.44 = 488,348.51 : x
  2. Step 2: Convert to fraction form
    890,678.75/1,229,214.44 = 488,348.51/x
  3. Step 3: Cross multiply
    890,678.75x = 1,229,214.44 × 488,348.51
  4. Step 4: Simplify right side
    890,678.75x = 600,285,037,802.74
  5. Step 5: Solve for x
    x = 600,285,037,802.74/890,678.75
  6. Step 6: Final answer
    x = 673,963.58

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Double scale
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Similar ratio
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1.5x scale

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.