Home / 500,095,991.72-690,132,468.58-280,079,417.72

Finding the Fourth Proportional to 500,095,991.72, 690,132,468.58 and 280,079,417.72

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Solution

The fourth proportional to 500,095,991.72, 690,132,468.58 and 280,079,417.72 is: 386,509,596.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,095,991.72 : 690,132,468.58 = 280,079,417.72 : x
  2. Step 2: Convert to fraction form
    500,095,991.72/690,132,468.58 = 280,079,417.72/x
  3. Step 3: Cross multiply
    500,095,991.72x = 690,132,468.58 × 280,079,417.72
  4. Step 4: Simplify right side
    500,095,991.72x = 193,291,899,949,552,640
  5. Step 5: Solve for x
    x = 193,291,899,949,552,640/500,095,991.72
  6. Step 6: Final answer
    x = 386,509,596.46

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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.