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Finding the Fourth Proportional to 522,607.36, 720,424.92 and 407,755.84

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Solution

The fourth proportional to 522,607.36, 720,424.92 and 407,755.84 is: 562,099.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,607.36 : 720,424.92 = 407,755.84 : x
  2. Step 2: Convert to fraction form
    522,607.36/720,424.92 = 407,755.84/x
  3. Step 3: Cross multiply
    522,607.36x = 720,424.92 × 407,755.84
  4. Step 4: Simplify right side
    522,607.36x = 293,757,468,411.53
  5. Step 5: Solve for x
    x = 293,757,468,411.53/522,607.36
  6. Step 6: Final answer
    x = 562,099.75

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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.