Home / 515,781,603.40-773,672,405.10-459,346,505.80

Finding the Fourth Proportional to 515,781,603.40, 773,672,405.10 and 459,346,505.80

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Solution

The fourth proportional to 515,781,603.40, 773,672,405.10 and 459,346,505.80 is: 689,019,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,781,603.40 : 773,672,405.10 = 459,346,505.80 : x
  2. Step 2: Convert to fraction form
    515,781,603.40/773,672,405.10 = 459,346,505.80/x
  3. Step 3: Cross multiply
    515,781,603.40x = 773,672,405.10 × 459,346,505.80
  4. Step 4: Simplify right side
    515,781,603.40x = 355,383,715,916,567,104
  5. Step 5: Solve for x
    x = 355,383,715,916,567,104/515,781,603.40
  6. Step 6: Final answer
    x = 689,019,758.70

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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.