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Finding the Fourth Proportional to 528,048.75, 728,833.32 and 313,313.43

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Solution

The fourth proportional to 528,048.75, 728,833.32 and 313,313.43 is: 432,447.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,048.75 : 728,833.32 = 313,313.43 : x
  2. Step 2: Convert to fraction form
    528,048.75/728,833.32 = 313,313.43/x
  3. Step 3: Cross multiply
    528,048.75x = 728,833.32 × 313,313.43
  4. Step 4: Simplify right side
    528,048.75x = 228,353,267,387.49
  5. Step 5: Solve for x
    x = 228,353,267,387.49/528,048.75
  6. Step 6: Final answer
    x = 432,447.32

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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.