Home / 638,581.04-881,281.52-352,100.68

Finding the Fourth Proportional to 638,581.04, 881,281.52 and 352,100.68

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Solution

The fourth proportional to 638,581.04, 881,281.52 and 352,100.68 is: 485,920.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,581.04 : 881,281.52 = 352,100.68 : x
  2. Step 2: Convert to fraction form
    638,581.04/881,281.52 = 352,100.68/x
  3. Step 3: Cross multiply
    638,581.04x = 881,281.52 × 352,100.68
  4. Step 4: Simplify right side
    638,581.04x = 310,299,822,463.43
  5. Step 5: Solve for x
    x = 310,299,822,463.43/638,581.04
  6. Step 6: Final answer
    x = 485,920.82

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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.