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Finding the Fourth Proportional to 528,250.32, 728,981.13 and 286,532.28

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Solution

The fourth proportional to 528,250.32, 728,981.13 and 286,532.28 is: 395,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,250.32 : 728,981.13 = 286,532.28 : x
  2. Step 2: Convert to fraction form
    528,250.32/728,981.13 = 286,532.28/x
  3. Step 3: Cross multiply
    528,250.32x = 728,981.13 × 286,532.28
  4. Step 4: Simplify right side
    528,250.32x = 208,876,625,255.88
  5. Step 5: Solve for x
    x = 208,876,625,255.88/528,250.32
  6. Step 6: Final answer
    x = 395,412.21

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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.