Home / 390,431,151.68-585,644,198.90-99,295,758.77

Finding the Fourth Proportional to 390,431,151.68, 585,644,198.90 and 99,295,758.77

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Solution

The fourth proportional to 390,431,151.68, 585,644,198.90 and 99,295,758.77 is: 148,942,995.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,431,151.68 : 585,644,198.90 = 99,295,758.77 : x
  2. Step 2: Convert to fraction form
    390,431,151.68/585,644,198.90 = 99,295,758.77/x
  3. Step 3: Cross multiply
    390,431,151.68x = 585,644,198.90 × 99,295,758.77
  4. Step 4: Simplify right side
    390,431,151.68x = 58,151,985,095,599,600
  5. Step 5: Solve for x
    x = 58,151,985,095,599,600/390,431,151.68
  6. Step 6: Final answer
    x = 148,942,995.06

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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.