Home / 909,644,149.76-1,255,309,765.12-491,956,435.51

Finding the Fourth Proportional to 909,644,149.76, 1,255,309,765.12 and 491,956,435.51

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Solution

The fourth proportional to 909,644,149.76, 1,255,309,765.12 and 491,956,435.51 is: 678,900,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,644,149.76 : 1,255,309,765.12 = 491,956,435.51 : x
  2. Step 2: Convert to fraction form
    909,644,149.76/1,255,309,765.12 = 491,956,435.51/x
  3. Step 3: Cross multiply
    909,644,149.76x = 1,255,309,765.12 × 491,956,435.51
  4. Step 4: Simplify right side
    909,644,149.76x = 617,557,717,506,782,592
  5. Step 5: Solve for x
    x = 617,557,717,506,782,592/909,644,149.76
  6. Step 6: Final answer
    x = 678,900,334.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.