Home / 520,009,195,500.72-717,618,507,422.76-288,526,906,125.36

Finding the Fourth Proportional to 520,009,195,500.72, 717,618,507,422.76 and 288,526,906,125.36

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Solution

The fourth proportional to 520,009,195,500.72, 717,618,507,422.76 and 288,526,906,125.36 is: 398,170,358,363.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,009,195,500.72 : 717,618,507,422.76 = 288,526,906,125.36 : x
  2. Step 2: Convert to fraction form
    520,009,195,500.72/717,618,507,422.76 = 288,526,906,125.36/x
  3. Step 3: Cross multiply
    520,009,195,500.72x = 717,618,507,422.76 × 288,526,906,125.36
  4. Step 4: Simplify right side
    520,009,195,500.72x = 207,052,247,724,987,640,709,120
  5. Step 5: Solve for x
    x = 207,052,247,724,987,640,709,120/520,009,195,500.72
  6. Step 6: Final answer
    x = 398,170,358,363.79

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1.5x scale

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.