Home / 1,991,580,442.20-2,987,370,663.30-958,459,138.20

Finding the Fourth Proportional to 1,991,580,442.20, 2,987,370,663.30 and 958,459,138.20

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Solution

The fourth proportional to 1,991,580,442.20, 2,987,370,663.30 and 958,459,138.20 is: 1,437,688,707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,580,442.20 : 2,987,370,663.30 = 958,459,138.20 : x
  2. Step 2: Convert to fraction form
    1,991,580,442.20/2,987,370,663.30 = 958,459,138.20/x
  3. Step 3: Cross multiply
    1,991,580,442.20x = 2,987,370,663.30 × 958,459,138.20
  4. Step 4: Simplify right side
    1,991,580,442.20x = 2,863,272,711,430,480,896
  5. Step 5: Solve for x
    x = 2,863,272,711,430,480,896/1,991,580,442.20
  6. Step 6: Final answer
    x = 1,437,688,707.30

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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.