Home / 628,500,665,619.20-942,750,998,428.75-430,141,375,251.17

Finding the Fourth Proportional to 628,500,665,619.20, 942,750,998,428.75 and 430,141,375,251.17

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Solution

The fourth proportional to 628,500,665,619.20, 942,750,998,428.75 and 430,141,375,251.17 is: 645,212,062,876.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,500,665,619.20 : 942,750,998,428.75 = 430,141,375,251.17 : x
  2. Step 2: Convert to fraction form
    628,500,665,619.20/942,750,998,428.75 = 430,141,375,251.17/x
  3. Step 3: Cross multiply
    628,500,665,619.20x = 942,750,998,428.75 × 430,141,375,251.17
  4. Step 4: Simplify right side
    628,500,665,619.20x = 405,516,210,983,556,108,779,520
  5. Step 5: Solve for x
    x = 405,516,210,983,556,108,779,520/628,500,665,619.20
  6. Step 6: Final answer
    x = 645,212,062,876.72

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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.