Home / 808,961.40-1,213,442.10-410,830.20

Finding the Fourth Proportional to 808,961.40, 1,213,442.10 and 410,830.20

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Solution

The fourth proportional to 808,961.40, 1,213,442.10 and 410,830.20 is: 616,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,961.40 : 1,213,442.10 = 410,830.20 : x
  2. Step 2: Convert to fraction form
    808,961.40/1,213,442.10 = 410,830.20/x
  3. Step 3: Cross multiply
    808,961.40x = 1,213,442.10 × 410,830.20
  4. Step 4: Simplify right side
    808,961.40x = 498,518,660,631.42
  5. Step 5: Solve for x
    x = 498,518,660,631.42/808,961.40
  6. Step 6: Final answer
    x = 616,245.30

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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.