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Finding the Fourth Proportional to 528,071.92, 728,777.80 and 301,712.56

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Solution

The fourth proportional to 528,071.92, 728,777.80 and 301,712.56 is: 416,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,071.92 : 728,777.80 = 301,712.56 : x
  2. Step 2: Convert to fraction form
    528,071.92/728,777.80 = 301,712.56/x
  3. Step 3: Cross multiply
    528,071.92x = 728,777.80 × 301,712.56
  4. Step 4: Simplify right side
    528,071.92x = 219,881,415,709.17
  5. Step 5: Solve for x
    x = 219,881,415,709.17/528,071.92
  6. Step 6: Final answer
    x = 416,385.36

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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.