Home / 819,830,421.66-1,228,757,615.73-376,561,420.86

Finding the Fourth Proportional to 819,830,421.66, 1,228,757,615.73 and 376,561,420.86

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Solution

The fourth proportional to 819,830,421.66, 1,228,757,615.73 and 376,561,420.86 is: 564,388,319.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,830,421.66 : 1,228,757,615.73 = 376,561,420.86 : x
  2. Step 2: Convert to fraction form
    819,830,421.66/1,228,757,615.73 = 376,561,420.86/x
  3. Step 3: Cross multiply
    819,830,421.66x = 1,228,757,615.73 × 376,561,420.86
  4. Step 4: Simplify right side
    819,830,421.66x = 462,702,713,671,834,688
  5. Step 5: Solve for x
    x = 462,702,713,671,834,688/819,830,421.66
  6. Step 6: Final answer
    x = 564,388,319.15

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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.