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Finding the Fourth Proportional to 643,866.52, 888,527.72 and 371,933.32

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Solution

The fourth proportional to 643,866.52, 888,527.72 and 371,933.32 is: 513,263.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,866.52 : 888,527.72 = 371,933.32 : x
  2. Step 2: Convert to fraction form
    643,866.52/888,527.72 = 371,933.32/x
  3. Step 3: Cross multiply
    643,866.52x = 888,527.72 × 371,933.32
  4. Step 4: Simplify right side
    643,866.52x = 330,473,064,811.63
  5. Step 5: Solve for x
    x = 330,473,064,811.63/643,866.52
  6. Step 6: Final answer
    x = 513,263.32

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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.