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Finding the Fourth Proportional to 522,335.82, 720,972.91 and 307,600.45

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Solution

The fourth proportional to 522,335.82, 720,972.91 and 307,600.45 is: 424,576.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,335.82 : 720,972.91 = 307,600.45 : x
  2. Step 2: Convert to fraction form
    522,335.82/720,972.91 = 307,600.45/x
  3. Step 3: Cross multiply
    522,335.82x = 720,972.91 × 307,600.45
  4. Step 4: Simplify right side
    522,335.82x = 221,771,590,135.88
  5. Step 5: Solve for x
    x = 221,771,590,135.88/522,335.82
  6. Step 6: Final answer
    x = 424,576.64

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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.