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Finding the Fourth Proportional to 528,559.20, 729,273.60 and 313,747.20

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Solution

The fourth proportional to 528,559.20, 729,273.60 and 313,747.20 is: 432,889.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,559.20 : 729,273.60 = 313,747.20 : x
  2. Step 2: Convert to fraction form
    528,559.20/729,273.60 = 313,747.20/x
  3. Step 3: Cross multiply
    528,559.20x = 729,273.60 × 313,747.20
  4. Step 4: Simplify right side
    528,559.20x = 228,807,550,033.92
  5. Step 5: Solve for x
    x = 228,807,550,033.92/528,559.20
  6. Step 6: Final answer
    x = 432,889.16

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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.