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Finding the Fourth Proportional to 634,458.06, 875,549.79 and 392,692.50

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Solution

The fourth proportional to 634,458.06, 875,549.79 and 392,692.50 is: 541,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,458.06 : 875,549.79 = 392,692.50 : x
  2. Step 2: Convert to fraction form
    634,458.06/875,549.79 = 392,692.50/x
  3. Step 3: Cross multiply
    634,458.06x = 875,549.79 × 392,692.50
  4. Step 4: Simplify right side
    634,458.06x = 343,821,835,909.58
  5. Step 5: Solve for x
    x = 343,821,835,909.58/634,458.06
  6. Step 6: Final answer
    x = 541,914.21

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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.