Home / 612,221,008,043.70-918,331,512,065.55-412,392,389,598.90

Finding the Fourth Proportional to 612,221,008,043.70, 918,331,512,065.55 and 412,392,389,598.90

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Solution

The fourth proportional to 612,221,008,043.70, 918,331,512,065.55 and 412,392,389,598.90 is: 618,588,584,398.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,221,008,043.70 : 918,331,512,065.55 = 412,392,389,598.90 : x
  2. Step 2: Convert to fraction form
    612,221,008,043.70/918,331,512,065.55 = 412,392,389,598.90/x
  3. Step 3: Cross multiply
    612,221,008,043.70x = 918,331,512,065.55 × 412,392,389,598.90
  4. Step 4: Simplify right side
    612,221,008,043.70x = 378,712,926,704,683,263,721,472
  5. Step 5: Solve for x
    x = 378,712,926,704,683,263,721,472/612,221,008,043.70
  6. Step 6: Final answer
    x = 618,588,584,398.35

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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.