Home / 390,719,862.80-586,079,794.20-99,586,422.80

Finding the Fourth Proportional to 390,719,862.80, 586,079,794.20 and 99,586,422.80

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Solution

The fourth proportional to 390,719,862.80, 586,079,794.20 and 99,586,422.80 is: 149,379,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,719,862.80 : 586,079,794.20 = 99,586,422.80 : x
  2. Step 2: Convert to fraction form
    390,719,862.80/586,079,794.20 = 99,586,422.80/x
  3. Step 3: Cross multiply
    390,719,862.80x = 586,079,794.20 × 99,586,422.80
  4. Step 4: Simplify right side
    390,719,862.80x = 58,365,590,179,738,192
  5. Step 5: Solve for x
    x = 58,365,590,179,738,192/390,719,862.80
  6. Step 6: Final answer
    x = 149,379,634.20

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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.