Home / 830,520,917.60-1,245,781,376.40-400,539,221.60

Finding the Fourth Proportional to 830,520,917.60, 1,245,781,376.40 and 400,539,221.60

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Solution

The fourth proportional to 830,520,917.60, 1,245,781,376.40 and 400,539,221.60 is: 600,808,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,520,917.60 : 1,245,781,376.40 = 400,539,221.60 : x
  2. Step 2: Convert to fraction form
    830,520,917.60/1,245,781,376.40 = 400,539,221.60/x
  3. Step 3: Cross multiply
    830,520,917.60x = 1,245,781,376.40 × 400,539,221.60
  4. Step 4: Simplify right side
    830,520,917.60x = 498,984,302,787,032,704
  5. Step 5: Solve for x
    x = 498,984,302,787,032,704/830,520,917.60
  6. Step 6: Final answer
    x = 600,808,832.40

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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.