Home / 827,872,867.18-1,241,172,808.90-428,603,417.92

Finding the Fourth Proportional to 827,872,867.18, 1,241,172,808.90 and 428,603,417.92

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Solution

The fourth proportional to 827,872,867.18, 1,241,172,808.90 and 428,603,417.92 is: 642,575,604.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,872,867.18 : 1,241,172,808.90 = 428,603,417.92 : x
  2. Step 2: Convert to fraction form
    827,872,867.18/1,241,172,808.90 = 428,603,417.92/x
  3. Step 3: Cross multiply
    827,872,867.18x = 1,241,172,808.90 × 428,603,417.92
  4. Step 4: Simplify right side
    827,872,867.18x = 531,970,908,124,386,944
  5. Step 5: Solve for x
    x = 531,970,908,124,386,944/827,872,867.18
  6. Step 6: Final answer
    x = 642,575,604.56

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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.