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Finding the Fourth Proportional to 528,164.02, 728,959.49 and 313,422.50

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Solution

The fourth proportional to 528,164.02, 728,959.49 and 313,422.50 is: 432,578.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,164.02 : 728,959.49 = 313,422.50 : x
  2. Step 2: Convert to fraction form
    528,164.02/728,959.49 = 313,422.50/x
  3. Step 3: Cross multiply
    528,164.02x = 728,959.49 × 313,422.50
  4. Step 4: Simplify right side
    528,164.02x = 228,472,305,754.53
  5. Step 5: Solve for x
    x = 228,472,305,754.53/528,164.02
  6. Step 6: Final answer
    x = 432,578.32

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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.