Home / 623,919.11-861,008.54-352,044.63

Finding the Fourth Proportional to 623,919.11, 861,008.54 and 352,044.63

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Solution

The fourth proportional to 623,919.11, 861,008.54 and 352,044.63 is: 485,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,919.11 : 861,008.54 = 352,044.63 : x
  2. Step 2: Convert to fraction form
    623,919.11/861,008.54 = 352,044.63/x
  3. Step 3: Cross multiply
    623,919.11x = 861,008.54 × 352,044.63
  4. Step 4: Simplify right side
    623,919.11x = 303,113,431,130.92
  5. Step 5: Solve for x
    x = 303,113,431,130.92/623,919.11
  6. Step 6: Final answer
    x = 485,821.69

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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.