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Finding the Fourth Proportional to 650,984.94, 898,465.56 and 389,323.08

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Solution

The fourth proportional to 650,984.94, 898,465.56 and 389,323.08 is: 537,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,984.94 : 898,465.56 = 389,323.08 : x
  2. Step 2: Convert to fraction form
    650,984.94/898,465.56 = 389,323.08/x
  3. Step 3: Cross multiply
    650,984.94x = 898,465.56 × 389,323.08
  4. Step 4: Simplify right side
    650,984.94x = 349,793,379,093.13
  5. Step 5: Solve for x
    x = 349,793,379,093.13/650,984.94
  6. Step 6: Final answer
    x = 537,329.45

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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.