Home / 1,217,397,731.09-1,680,012,095.63-660,480,778.13

Finding the Fourth Proportional to 1,217,397,731.09, 1,680,012,095.63 and 660,480,778.13

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Solution

The fourth proportional to 1,217,397,731.09, 1,680,012,095.63 and 660,480,778.13 is: 911,465,224.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,397,731.09 : 1,680,012,095.63 = 660,480,778.13 : x
  2. Step 2: Convert to fraction form
    1,217,397,731.09/1,680,012,095.63 = 660,480,778.13/x
  3. Step 3: Cross multiply
    1,217,397,731.09x = 1,680,012,095.63 × 660,480,778.13
  4. Step 4: Simplify right side
    1,217,397,731.09x = 1,109,615,696,177,811,968
  5. Step 5: Solve for x
    x = 1,109,615,696,177,811,968/1,217,397,731.09
  6. Step 6: Final answer
    x = 911,465,224.42

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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.