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Finding the Fourth Proportional to 500,239.62, 690,728.76 and 461,985.12

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Solution

The fourth proportional to 500,239.62, 690,728.76 and 461,985.12 is: 637,907.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,239.62 : 690,728.76 = 461,985.12 : x
  2. Step 2: Convert to fraction form
    500,239.62/690,728.76 = 461,985.12/x
  3. Step 3: Cross multiply
    500,239.62x = 690,728.76 × 461,985.12
  4. Step 4: Simplify right side
    500,239.62x = 319,106,409,076.05
  5. Step 5: Solve for x
    x = 319,106,409,076.05/500,239.62
  6. Step 6: Final answer
    x = 637,907.11

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Double scale
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Similar ratio
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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.