Home / 1,217,711,876.22-1,680,442,389.34-660,794,923.28

Finding the Fourth Proportional to 1,217,711,876.22, 1,680,442,389.34 and 660,794,923.28

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Solution

The fourth proportional to 1,217,711,876.22, 1,680,442,389.34 and 660,794,923.28 is: 911,896,994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,711,876.22 : 1,680,442,389.34 = 660,794,923.28 : x
  2. Step 2: Convert to fraction form
    1,217,711,876.22/1,680,442,389.34 = 660,794,923.28/x
  3. Step 3: Cross multiply
    1,217,711,876.22x = 1,680,442,389.34 × 660,794,923.28
  4. Step 4: Simplify right side
    1,217,711,876.22x = 1,110,427,799,742,934,400
  5. Step 5: Solve for x
    x = 1,110,427,799,742,934,400/1,217,711,876.22
  6. Step 6: Final answer
    x = 911,896,994.21

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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.