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Finding the Fourth Proportional to 707,289.68, 976,072.20 and 385,009.04

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Solution

The fourth proportional to 707,289.68, 976,072.20 and 385,009.04 is: 531,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,289.68 : 976,072.20 = 385,009.04 : x
  2. Step 2: Convert to fraction form
    707,289.68/976,072.20 = 385,009.04/x
  3. Step 3: Cross multiply
    707,289.68x = 976,072.20 × 385,009.04
  4. Step 4: Simplify right side
    707,289.68x = 375,796,620,692.69
  5. Step 5: Solve for x
    x = 375,796,620,692.69/707,289.68
  6. Step 6: Final answer
    x = 531,319.25

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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.