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Finding the Fourth Proportional to 529,208.69, 730,314.23 and 287,495.08

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Solution

The fourth proportional to 529,208.69, 730,314.23 and 287,495.08 is: 396,746.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,208.69 : 730,314.23 = 287,495.08 : x
  2. Step 2: Convert to fraction form
    529,208.69/730,314.23 = 287,495.08/x
  3. Step 3: Cross multiply
    529,208.69x = 730,314.23 × 287,495.08
  4. Step 4: Simplify right side
    529,208.69x = 209,961,744,715.73
  5. Step 5: Solve for x
    x = 209,961,744,715.73/529,208.69
  6. Step 6: Final answer
    x = 396,746.60

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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.