Home / 426,492,009.20-639,738,013.80-349,007,911.40

Finding the Fourth Proportional to 426,492,009.20, 639,738,013.80 and 349,007,911.40

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Solution

The fourth proportional to 426,492,009.20, 639,738,013.80 and 349,007,911.40 is: 523,511,867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,009.20 : 639,738,013.80 = 349,007,911.40 : x
  2. Step 2: Convert to fraction form
    426,492,009.20/639,738,013.80 = 349,007,911.40/x
  3. Step 3: Cross multiply
    426,492,009.20x = 639,738,013.80 × 349,007,911.40
  4. Step 4: Simplify right side
    426,492,009.20x = 223,273,628,039,522,336
  5. Step 5: Solve for x
    x = 223,273,628,039,522,336/426,492,009.20
  6. Step 6: Final answer
    x = 523,511,867.10

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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.