Home / 909,660,663.35-1,255,331,717.40-491,972,948.59

Finding the Fourth Proportional to 909,660,663.35, 1,255,331,717.40 and 491,972,948.59

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Solution

The fourth proportional to 909,660,663.35, 1,255,331,717.40 and 491,972,948.59 is: 678,922,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,660,663.35 : 1,255,331,717.40 = 491,972,948.59 : x
  2. Step 2: Convert to fraction form
    909,660,663.35/1,255,331,717.40 = 491,972,948.59/x
  3. Step 3: Cross multiply
    909,660,663.35x = 1,255,331,717.40 × 491,972,948.59
  4. Step 4: Simplify right side
    909,660,663.35x = 617,589,246,467,826,560
  5. Step 5: Solve for x
    x = 617,589,246,467,826,560/909,660,663.35
  6. Step 6: Final answer
    x = 678,922,670.12

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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.