Home / 916,780.72-1,374,329.14-317,322.66

Finding the Fourth Proportional to 916,780.72, 1,374,329.14 and 317,322.66

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Solution

The fourth proportional to 916,780.72, 1,374,329.14 and 317,322.66 is: 475,692.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,780.72 : 1,374,329.14 = 317,322.66 : x
  2. Step 2: Convert to fraction form
    916,780.72/1,374,329.14 = 317,322.66/x
  3. Step 3: Cross multiply
    916,780.72x = 1,374,329.14 × 317,322.66
  4. Step 4: Simplify right side
    916,780.72x = 436,105,774,530.06
  5. Step 5: Solve for x
    x = 436,105,774,530.06/916,780.72
  6. Step 6: Final answer
    x = 475,692.57

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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.