Home / 1,320,145,420,730-1,980,215,659,570-413,652,625,178.76

Finding the Fourth Proportional to 1,320,145,420,730, 1,980,215,659,570 and 413,652,625,178.76

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Solution

The fourth proportional to 1,320,145,420,730, 1,980,215,659,570 and 413,652,625,178.76 is: 620,478,163,343.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,145,420,730 : 1,980,215,659,570 = 413,652,625,178.76 : x
  2. Step 2: Convert to fraction form
    1,320,145,420,730/1,980,215,659,570 = 413,652,625,178.76/x
  3. Step 3: Cross multiply
    1,320,145,420,730x = 1,980,215,659,570 × 413,652,625,178.76
  4. Step 4: Simplify right side
    1,320,145,420,730x = 819,121,406,001,220,258,103,296
  5. Step 5: Solve for x
    x = 819,121,406,001,220,258,103,296/1,320,145,420,730
  6. Step 6: Final answer
    x = 620,478,163,343.76

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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.