Home / 456,323,229.16-684,436,320.22-128,790,644.20

Finding the Fourth Proportional to 456,323,229.16, 684,436,320.22 and 128,790,644.20

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Solution

The fourth proportional to 456,323,229.16, 684,436,320.22 and 128,790,644.20 is: 193,172,271.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,323,229.16 : 684,436,320.22 = 128,790,644.20 : x
  2. Step 2: Convert to fraction form
    456,323,229.16/684,436,320.22 = 128,790,644.20/x
  3. Step 3: Cross multiply
    456,323,229.16x = 684,436,320.22 × 128,790,644.20
  4. Step 4: Simplify right side
    456,323,229.16x = 88,148,994,595,011,296
  5. Step 5: Solve for x
    x = 88,148,994,595,011,296/456,323,229.16
  6. Step 6: Final answer
    x = 193,172,271.24

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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.