Home / 885,258,199.20-1,221,763,930.80-513,980,230.56

Finding the Fourth Proportional to 885,258,199.20, 1,221,763,930.80 and 513,980,230.56

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Solution

The fourth proportional to 885,258,199.20, 1,221,763,930.80 and 513,980,230.56 is: 709,355,199.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,258,199.20 : 1,221,763,930.80 = 513,980,230.56 : x
  2. Step 2: Convert to fraction form
    885,258,199.20/1,221,763,930.80 = 513,980,230.56/x
  3. Step 3: Cross multiply
    885,258,199.20x = 1,221,763,930.80 × 513,980,230.56
  4. Step 4: Simplify right side
    885,258,199.20x = 627,962,506,842,475,904
  5. Step 5: Solve for x
    x = 627,962,506,842,475,904/885,258,199.20
  6. Step 6: Final answer
    x = 709,355,199.88

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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.