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Finding the Fourth Proportional to 525,697.72, 725,462.18 and 283,980.20

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Solution

The fourth proportional to 525,697.72, 725,462.18 and 283,980.20 is: 391,892.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,697.72 : 725,462.18 = 283,980.20 : x
  2. Step 2: Convert to fraction form
    525,697.72/725,462.18 = 283,980.20/x
  3. Step 3: Cross multiply
    525,697.72x = 725,462.18 × 283,980.20
  4. Step 4: Simplify right side
    525,697.72x = 206,016,894,968.84
  5. Step 5: Solve for x
    x = 206,016,894,968.84/525,697.72
  6. Step 6: Final answer
    x = 391,892.31

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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.