Home / 910,317,780.64-1,256,242,367.19-492,630,086.44

Finding the Fourth Proportional to 910,317,780.64, 1,256,242,367.19 and 492,630,086.44

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Solution

The fourth proportional to 910,317,780.64, 1,256,242,367.19 and 492,630,086.44 is: 679,831,591.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,317,780.64 : 1,256,242,367.19 = 492,630,086.44 : x
  2. Step 2: Convert to fraction form
    910,317,780.64/1,256,242,367.19 = 492,630,086.44/x
  3. Step 3: Cross multiply
    910,317,780.64x = 1,256,242,367.19 × 492,630,086.44
  4. Step 4: Simplify right side
    910,317,780.64x = 618,862,785,938,400,000
  5. Step 5: Solve for x
    x = 618,862,785,938,400,000/910,317,780.64
  6. Step 6: Final answer
    x = 679,831,591.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.