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Finding the Fourth Proportional to 673,792.75, 929,728.29 and 387,259.30

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Solution

The fourth proportional to 673,792.75, 929,728.29 and 387,259.30 is: 534,357.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,792.75 : 929,728.29 = 387,259.30 : x
  2. Step 2: Convert to fraction form
    673,792.75/929,728.29 = 387,259.30/x
  3. Step 3: Cross multiply
    673,792.75x = 929,728.29 × 387,259.30
  4. Step 4: Simplify right side
    673,792.75x = 360,045,926,775.60
  5. Step 5: Solve for x
    x = 360,045,926,775.60/673,792.75
  6. Step 6: Final answer
    x = 534,357.08

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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.