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Finding the Fourth Proportional to 667,666.53, 920,877.53 and 463,717.71

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Solution

The fourth proportional to 667,666.53, 920,877.53 and 463,717.71 is: 639,581.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,666.53 : 920,877.53 = 463,717.71 : x
  2. Step 2: Convert to fraction form
    667,666.53/920,877.53 = 463,717.71/x
  3. Step 3: Cross multiply
    667,666.53x = 920,877.53 × 463,717.71
  4. Step 4: Simplify right side
    667,666.53x = 427,027,217,083.47
  5. Step 5: Solve for x
    x = 427,027,217,083.47/667,666.53
  6. Step 6: Final answer
    x = 639,581.58

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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.