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Finding the Fourth Proportional to 552,539.40, 762,498.86 and 307,520.07

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Solution

The fourth proportional to 552,539.40, 762,498.86 and 307,520.07 is: 424,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,539.40 : 762,498.86 = 307,520.07 : x
  2. Step 2: Convert to fraction form
    552,539.40/762,498.86 = 307,520.07/x
  3. Step 3: Cross multiply
    552,539.40x = 762,498.86 × 307,520.07
  4. Step 4: Simplify right side
    552,539.40x = 234,483,702,802.12
  5. Step 5: Solve for x
    x = 234,483,702,802.12/552,539.40
  6. Step 6: Final answer
    x = 424,374.63

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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.