Home / 638,624.20-881,307.54-352,154.44

Finding the Fourth Proportional to 638,624.20, 881,307.54 and 352,154.44

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Solution

The fourth proportional to 638,624.20, 881,307.54 and 352,154.44 is: 485,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,624.20 : 881,307.54 = 352,154.44 : x
  2. Step 2: Convert to fraction form
    638,624.20/881,307.54 = 352,154.44/x
  3. Step 3: Cross multiply
    638,624.20x = 881,307.54 × 352,154.44
  4. Step 4: Simplify right side
    638,624.20x = 310,356,363,216.48
  5. Step 5: Solve for x
    x = 310,356,363,216.48/638,624.20
  6. Step 6: Final answer
    x = 485,976.52

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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.