Home / 636,823.23-878,821.76-346,441.12

Finding the Fourth Proportional to 636,823.23, 878,821.76 and 346,441.12

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Solution

The fourth proportional to 636,823.23, 878,821.76 and 346,441.12 is: 478,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,823.23 : 878,821.76 = 346,441.12 : x
  2. Step 2: Convert to fraction form
    636,823.23/878,821.76 = 346,441.12/x
  3. Step 3: Cross multiply
    636,823.23x = 878,821.76 × 346,441.12
  4. Step 4: Simplify right side
    636,823.23x = 304,459,993,483.82
  5. Step 5: Solve for x
    x = 304,459,993,483.82/636,823.23
  6. Step 6: Final answer
    x = 478,091.85

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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.