Home / 774,343,275.78-1,068,580,266.21-421,922,162.40

Finding the Fourth Proportional to 774,343,275.78, 1,068,580,266.21 and 421,922,162.40

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Solution

The fourth proportional to 774,343,275.78, 1,068,580,266.21 and 421,922,162.40 is: 582,245,253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,343,275.78 : 1,068,580,266.21 = 421,922,162.40 : x
  2. Step 2: Convert to fraction form
    774,343,275.78/1,068,580,266.21 = 421,922,162.40/x
  3. Step 3: Cross multiply
    774,343,275.78x = 1,068,580,266.21 × 421,922,162.40
  4. Step 4: Simplify right side
    774,343,275.78x = 450,857,696,617,290,816
  5. Step 5: Solve for x
    x = 450,857,696,617,290,816/774,343,275.78
  6. Step 6: Final answer
    x = 582,245,253.13

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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.