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Finding the Fourth Proportional to 915,774.80, 1,371,037.80 and 889,530.80

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Solution

The fourth proportional to 915,774.80, 1,371,037.80 and 889,530.80 is: 1,331,747.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,774.80 : 1,371,037.80 = 889,530.80 : x
  2. Step 2: Convert to fraction form
    915,774.80/1,371,037.80 = 889,530.80/x
  3. Step 3: Cross multiply
    915,774.80x = 1,371,037.80 × 889,530.80
  4. Step 4: Simplify right side
    915,774.80x = 1,219,580,351,064.24
  5. Step 5: Solve for x
    x = 1,219,580,351,064.24/915,774.80
  6. Step 6: Final answer
    x = 1,331,747.01

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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.