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Finding the Fourth Proportional to 528,070.92, 728,776.42 and 301,711.56

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Solution

The fourth proportional to 528,070.92, 728,776.42 and 301,711.56 is: 416,383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,070.92 : 728,776.42 = 301,711.56 : x
  2. Step 2: Convert to fraction form
    528,070.92/728,776.42 = 301,711.56/x
  3. Step 3: Cross multiply
    528,070.92x = 728,776.42 × 301,711.56
  4. Step 4: Simplify right side
    528,070.92x = 219,880,270,569.42
  5. Step 5: Solve for x
    x = 219,880,270,569.42/528,070.92
  6. Step 6: Final answer
    x = 416,383.98

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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.