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Finding the Fourth Proportional to 528,857.30, 730,423.98 and 356,477.96

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Solution

The fourth proportional to 528,857.30, 730,423.98 and 356,477.96 is: 492,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,857.30 : 730,423.98 = 356,477.96 : x
  2. Step 2: Convert to fraction form
    528,857.30/730,423.98 = 356,477.96/x
  3. Step 3: Cross multiply
    528,857.30x = 730,423.98 × 356,477.96
  4. Step 4: Simplify right side
    528,857.30x = 260,380,052,151.54
  5. Step 5: Solve for x
    x = 260,380,052,151.54/528,857.30
  6. Step 6: Final answer
    x = 492,344.63

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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.