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Finding the Fourth Proportional to 669,878.16, 923,922.90 and 463,490.16

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Solution

The fourth proportional to 669,878.16, 923,922.90 and 463,490.16 is: 639,264.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,878.16 : 923,922.90 = 463,490.16 : x
  2. Step 2: Convert to fraction form
    669,878.16/923,922.90 = 463,490.16/x
  3. Step 3: Cross multiply
    669,878.16x = 923,922.90 × 463,490.16
  4. Step 4: Simplify right side
    669,878.16x = 428,229,172,748.66
  5. Step 5: Solve for x
    x = 428,229,172,748.66/669,878.16
  6. Step 6: Final answer
    x = 639,264.27

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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.