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Finding the Fourth Proportional to 528,995.44, 730,007.13 and 287,279.73

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Solution

The fourth proportional to 528,995.44, 730,007.13 and 287,279.73 is: 396,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,995.44 : 730,007.13 = 287,279.73 : x
  2. Step 2: Convert to fraction form
    528,995.44/730,007.13 = 287,279.73/x
  3. Step 3: Cross multiply
    528,995.44x = 730,007.13 × 287,279.73
  4. Step 4: Simplify right side
    528,995.44x = 209,716,252,281.77
  5. Step 5: Solve for x
    x = 209,716,252,281.77/528,995.44
  6. Step 6: Final answer
    x = 396,442.46

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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.