Home / 528,660,708.38-729,509,006.16-305,656,697.85

Finding the Fourth Proportional to 528,660,708.38, 729,509,006.16 and 305,656,697.85

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Solution

The fourth proportional to 528,660,708.38, 729,509,006.16 and 305,656,697.85 is: 421,781,513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,660,708.38 : 729,509,006.16 = 305,656,697.85 : x
  2. Step 2: Convert to fraction form
    528,660,708.38/729,509,006.16 = 305,656,697.85/x
  3. Step 3: Cross multiply
    528,660,708.38x = 729,509,006.16 × 305,656,697.85
  4. Step 4: Simplify right side
    528,660,708.38x = 222,979,313,871,965,248
  5. Step 5: Solve for x
    x = 222,979,313,871,965,248/528,660,708.38
  6. Step 6: Final answer
    x = 421,781,513.81

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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.