Home / 550,565,999.40-825,848,999.10-386,988,459.60

Finding the Fourth Proportional to 550,565,999.40, 825,848,999.10 and 386,988,459.60

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Solution

The fourth proportional to 550,565,999.40, 825,848,999.10 and 386,988,459.60 is: 580,482,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,565,999.40 : 825,848,999.10 = 386,988,459.60 : x
  2. Step 2: Convert to fraction form
    550,565,999.40/825,848,999.10 = 386,988,459.60/x
  3. Step 3: Cross multiply
    550,565,999.40x = 825,848,999.10 × 386,988,459.60
  4. Step 4: Simplify right side
    550,565,999.40x = 319,594,032,023,910,784
  5. Step 5: Solve for x
    x = 319,594,032,023,910,784/550,565,999.40
  6. Step 6: Final answer
    x = 580,482,689.40

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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.