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Finding the Fourth Proportional to 1,618,652.90, 2,427,979.35 and 778,844.90

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Solution

The fourth proportional to 1,618,652.90, 2,427,979.35 and 778,844.90 is: 1,168,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618,652.90 : 2,427,979.35 = 778,844.90 : x
  2. Step 2: Convert to fraction form
    1,618,652.90/2,427,979.35 = 778,844.90/x
  3. Step 3: Cross multiply
    1,618,652.90x = 2,427,979.35 × 778,844.90
  4. Step 4: Simplify right side
    1,618,652.90x = 1,891,019,334,052.82
  5. Step 5: Solve for x
    x = 1,891,019,334,052.82/1,618,652.90
  6. Step 6: Final answer
    x = 1,168,267.35

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Double scale
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Similar ratio
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1.5x scale

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.