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Finding the Fourth Proportional to 1,946,454.60, 2,918,807.10 and 747,978.60

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Solution

The fourth proportional to 1,946,454.60, 2,918,807.10 and 747,978.60 is: 1,121,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946,454.60 : 2,918,807.10 = 747,978.60 : x
  2. Step 2: Convert to fraction form
    1,946,454.60/2,918,807.10 = 747,978.60/x
  3. Step 3: Cross multiply
    1,946,454.60x = 2,918,807.10 × 747,978.60
  4. Step 4: Simplify right side
    1,946,454.60x = 2,183,205,248,328.06
  5. Step 5: Solve for x
    x = 2,183,205,248,328.06/1,946,454.60
  6. Step 6: Final answer
    x = 1,121,631.73

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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.