Home / 687,404.40-1,030,692.38-308,256.59

Finding the Fourth Proportional to 687,404.40, 1,030,692.38 and 308,256.59

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Solution

The fourth proportional to 687,404.40, 1,030,692.38 and 308,256.59 is: 462,199.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,404.40 : 1,030,692.38 = 308,256.59 : x
  2. Step 2: Convert to fraction form
    687,404.40/1,030,692.38 = 308,256.59/x
  3. Step 3: Cross multiply
    687,404.40x = 1,030,692.38 × 308,256.59
  4. Step 4: Simplify right side
    687,404.40x = 317,717,711,703.04
  5. Step 5: Solve for x
    x = 317,717,711,703.04/687,404.40
  6. Step 6: Final answer
    x = 462,199.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.