Home / 478,545,462.15-660,439,815.92-290,358,986.34

Finding the Fourth Proportional to 478,545,462.15, 660,439,815.92 and 290,358,986.34

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Solution

The fourth proportional to 478,545,462.15, 660,439,815.92 and 290,358,986.34 is: 400,723,965.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,545,462.15 : 660,439,815.92 = 290,358,986.34 : x
  2. Step 2: Convert to fraction form
    478,545,462.15/660,439,815.92 = 290,358,986.34/x
  3. Step 3: Cross multiply
    478,545,462.15x = 660,439,815.92 × 290,358,986.34
  4. Step 4: Simplify right side
    478,545,462.15x = 191,764,635,489,107,360
  5. Step 5: Solve for x
    x = 191,764,635,489,107,360/478,545,462.15
  6. Step 6: Final answer
    x = 400,723,965.97

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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.