Home / 612,221,008,078.20-918,331,512,117.30-412,392,389,633.40

Finding the Fourth Proportional to 612,221,008,078.20, 918,331,512,117.30 and 412,392,389,633.40

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Solution

The fourth proportional to 612,221,008,078.20, 918,331,512,117.30 and 412,392,389,633.40 is: 618,588,584,450.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,221,008,078.20 : 918,331,512,117.30 = 412,392,389,633.40 : x
  2. Step 2: Convert to fraction form
    612,221,008,078.20/918,331,512,117.30 = 412,392,389,633.40/x
  3. Step 3: Cross multiply
    612,221,008,078.20x = 918,331,512,117.30 × 412,392,389,633.40
  4. Step 4: Simplify right side
    612,221,008,078.20x = 378,712,926,757,707,050,909,696
  5. Step 5: Solve for x
    x = 378,712,926,757,707,050,909,696/612,221,008,078.20
  6. Step 6: Final answer
    x = 618,588,584,450.10

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1.5x scale

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.