Home / 708,589,938.70-1,062,884,908.05-320,425,432.30

Finding the Fourth Proportional to 708,589,938.70, 1,062,884,908.05 and 320,425,432.30

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Solution

The fourth proportional to 708,589,938.70, 1,062,884,908.05 and 320,425,432.30 is: 480,638,148.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,589,938.70 : 1,062,884,908.05 = 320,425,432.30 : x
  2. Step 2: Convert to fraction form
    708,589,938.70/1,062,884,908.05 = 320,425,432.30/x
  3. Step 3: Cross multiply
    708,589,938.70x = 1,062,884,908.05 × 320,425,432.30
  4. Step 4: Simplify right side
    708,589,938.70x = 340,575,356,147,067,008
  5. Step 5: Solve for x
    x = 340,575,356,147,067,008/708,589,938.70
  6. Step 6: Final answer
    x = 480,638,148.45

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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.