Home / 390,722,140.80-586,083,211.20-99,588,700.80

Finding the Fourth Proportional to 390,722,140.80, 586,083,211.20 and 99,588,700.80

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Solution

The fourth proportional to 390,722,140.80, 586,083,211.20 and 99,588,700.80 is: 149,383,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,722,140.80 : 586,083,211.20 = 99,588,700.80 : x
  2. Step 2: Convert to fraction form
    390,722,140.80/586,083,211.20 = 99,588,700.80/x
  3. Step 3: Cross multiply
    390,722,140.80x = 586,083,211.20 × 99,588,700.80
  4. Step 4: Simplify right side
    390,722,140.80x = 58,367,265,564,100,008
  5. Step 5: Solve for x
    x = 58,367,265,564,100,008/390,722,140.80
  6. Step 6: Final answer
    x = 149,383,051.20

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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.