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Finding the Fourth Proportional to 529,208.37, 730,312.61 and 287,492.76

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Solution

The fourth proportional to 529,208.37, 730,312.61 and 287,492.76 is: 396,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,208.37 : 730,312.61 = 287,492.76 : x
  2. Step 2: Convert to fraction form
    529,208.37/730,312.61 = 287,492.76/x
  3. Step 3: Cross multiply
    529,208.37x = 730,312.61 × 287,492.76
  4. Step 4: Simplify right side
    529,208.37x = 209,959,586,474.24
  5. Step 5: Solve for x
    x = 209,959,586,474.24/529,208.37
  6. Step 6: Final answer
    x = 396,742.75

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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.