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Finding the Fourth Proportional to 1,234,928.34, 1,855,493.19 and 785,844.90

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Solution

The fourth proportional to 1,234,928.34, 1,855,493.19 and 785,844.90 is: 1,180,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,928.34 : 1,855,493.19 = 785,844.90 : x
  2. Step 2: Convert to fraction form
    1,234,928.34/1,855,493.19 = 785,844.90/x
  3. Step 3: Cross multiply
    1,234,928.34x = 1,855,493.19 × 785,844.90
  4. Step 4: Simplify right side
    1,234,928.34x = 1,458,129,860,346.23
  5. Step 5: Solve for x
    x = 1,458,129,860,346.23/1,234,928.34
  6. Step 6: Final answer
    x = 1,180,740.46

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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.