Home / 521,520,773,443.30-782,281,160,164.95-149,290,993,987.30

Finding the Fourth Proportional to 521,520,773,443.30, 782,281,160,164.95 and 149,290,993,987.30

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Solution

The fourth proportional to 521,520,773,443.30, 782,281,160,164.95 and 149,290,993,987.30 is: 223,936,490,980.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,520,773,443.30 : 782,281,160,164.95 = 149,290,993,987.30 : x
  2. Step 2: Convert to fraction form
    521,520,773,443.30/782,281,160,164.95 = 149,290,993,987.30/x
  3. Step 3: Cross multiply
    521,520,773,443.30x = 782,281,160,164.95 × 149,290,993,987.30
  4. Step 4: Simplify right side
    521,520,773,443.30x = 116,787,531,978,563,609,690,112
  5. Step 5: Solve for x
    x = 116,787,531,978,563,609,690,112/521,520,773,443.30
  6. Step 6: Final answer
    x = 223,936,490,980.95

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Double scale
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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.