Home / 807,237,843.40-1,210,856,765.10-438,949,230.40

Finding the Fourth Proportional to 807,237,843.40, 1,210,856,765.10 and 438,949,230.40

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Solution

The fourth proportional to 807,237,843.40, 1,210,856,765.10 and 438,949,230.40 is: 658,423,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,237,843.40 : 1,210,856,765.10 = 438,949,230.40 : x
  2. Step 2: Convert to fraction form
    807,237,843.40/1,210,856,765.10 = 438,949,230.40/x
  3. Step 3: Cross multiply
    807,237,843.40x = 1,210,856,765.10 × 438,949,230.40
  4. Step 4: Simplify right side
    807,237,843.40x = 531,504,645,165,278,528
  5. Step 5: Solve for x
    x = 531,504,645,165,278,528/807,237,843.40
  6. Step 6: Final answer
    x = 658,423,845.60

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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.