Home / 426,492,037.20-639,738,055.80-349,007,939.40

Finding the Fourth Proportional to 426,492,037.20, 639,738,055.80 and 349,007,939.40

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Solution

The fourth proportional to 426,492,037.20, 639,738,055.80 and 349,007,939.40 is: 523,511,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,037.20 : 639,738,055.80 = 349,007,939.40 : x
  2. Step 2: Convert to fraction form
    426,492,037.20/639,738,055.80 = 349,007,939.40/x
  3. Step 3: Cross multiply
    426,492,037.20x = 639,738,055.80 × 349,007,939.40
  4. Step 4: Simplify right side
    426,492,037.20x = 223,273,660,610,520,192
  5. Step 5: Solve for x
    x = 223,273,660,610,520,192/426,492,037.20
  6. Step 6: Final answer
    x = 523,511,909.10

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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.