Home / 787,339,719.40-1,181,009,579.10-424,542,663.40

Finding the Fourth Proportional to 787,339,719.40, 1,181,009,579.10 and 424,542,663.40

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Solution

The fourth proportional to 787,339,719.40, 1,181,009,579.10 and 424,542,663.40 is: 636,813,995.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,339,719.40 : 1,181,009,579.10 = 424,542,663.40 : x
  2. Step 2: Convert to fraction form
    787,339,719.40/1,181,009,579.10 = 424,542,663.40/x
  3. Step 3: Cross multiply
    787,339,719.40x = 1,181,009,579.10 × 424,542,663.40
  4. Step 4: Simplify right side
    787,339,719.40x = 501,388,952,212,026,880
  5. Step 5: Solve for x
    x = 501,388,952,212,026,880/787,339,719.40
  6. Step 6: Final answer
    x = 636,813,995.10

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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.