Home / 662,880.35-914,749.10-405,188.76

Finding the Fourth Proportional to 662,880.35, 914,749.10 and 405,188.76

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Solution

The fourth proportional to 662,880.35, 914,749.10 and 405,188.76 is: 559,144.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,880.35 : 914,749.10 = 405,188.76 : x
  2. Step 2: Convert to fraction form
    662,880.35/914,749.10 = 405,188.76/x
  3. Step 3: Cross multiply
    662,880.35x = 914,749.10 × 405,188.76
  4. Step 4: Simplify right side
    662,880.35x = 370,646,051,514.17
  5. Step 5: Solve for x
    x = 370,646,051,514.17/662,880.35
  6. Step 6: Final answer
    x = 559,144.73

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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.