Home / 636,748.89-878,633.70-430,466.19

Finding the Fourth Proportional to 636,748.89, 878,633.70 and 430,466.19

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Solution

The fourth proportional to 636,748.89, 878,633.70 and 430,466.19 is: 593,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,748.89 : 878,633.70 = 430,466.19 : x
  2. Step 2: Convert to fraction form
    636,748.89/878,633.70 = 430,466.19/x
  3. Step 3: Cross multiply
    636,748.89x = 878,633.70 × 430,466.19
  4. Step 4: Simplify right side
    636,748.89x = 378,222,101,244.60
  5. Step 5: Solve for x
    x = 378,222,101,244.60/636,748.89
  6. Step 6: Final answer
    x = 593,989.42

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Double scale
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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.