Home / 529,220.70-730,321.65-287,501.34

Finding the Fourth Proportional to 529,220.70, 730,321.65 and 287,501.34

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Solution

The fourth proportional to 529,220.70, 730,321.65 and 287,501.34 is: 396,750.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,220.70 : 730,321.65 = 287,501.34 : x
  2. Step 2: Convert to fraction form
    529,220.70/730,321.65 = 287,501.34/x
  3. Step 3: Cross multiply
    529,220.70x = 730,321.65 × 287,501.34
  4. Step 4: Simplify right side
    529,220.70x = 209,968,453,006.01
  5. Step 5: Solve for x
    x = 209,968,453,006.01/529,220.70
  6. Step 6: Final answer
    x = 396,750.27

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Double scale
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Similar ratio
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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.