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Finding the Fourth Proportional to 650,986.94, 898,468.32 and 389,325.08

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Solution

The fourth proportional to 650,986.94, 898,468.32 and 389,325.08 is: 537,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,986.94 : 898,468.32 = 389,325.08 : x
  2. Step 2: Convert to fraction form
    650,986.94/898,468.32 = 389,325.08/x
  3. Step 3: Cross multiply
    650,986.94x = 898,468.32 × 389,325.08
  4. Step 4: Simplify right side
    650,986.94x = 349,796,250,561.47
  5. Step 5: Solve for x
    x = 349,796,250,561.47/650,986.94
  6. Step 6: Final answer
    x = 537,332.21

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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.