Home / 426,383,999.90-639,575,999.85-357,509,246.30

Finding the Fourth Proportional to 426,383,999.90, 639,575,999.85 and 357,509,246.30

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Solution

The fourth proportional to 426,383,999.90, 639,575,999.85 and 357,509,246.30 is: 536,263,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,383,999.90 : 639,575,999.85 = 357,509,246.30 : x
  2. Step 2: Convert to fraction form
    426,383,999.90/639,575,999.85 = 357,509,246.30/x
  3. Step 3: Cross multiply
    426,383,999.90x = 639,575,999.85 × 357,509,246.30
  4. Step 4: Simplify right side
    426,383,999.90x = 228,654,333,657,942,432
  5. Step 5: Solve for x
    x = 228,654,333,657,942,432/426,383,999.90
  6. Step 6: Final answer
    x = 536,263,869.45

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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.