Home / 1,398,541,804.12-1,929,964,447.74-771,994,025.56

Finding the Fourth Proportional to 1,398,541,804.12, 1,929,964,447.74 and 771,994,025.56

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Solution

The fourth proportional to 1,398,541,804.12, 1,929,964,447.74 and 771,994,025.56 is: 1,065,338,925.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,541,804.12 : 1,929,964,447.74 = 771,994,025.56 : x
  2. Step 2: Convert to fraction form
    1,398,541,804.12/1,929,964,447.74 = 771,994,025.56/x
  3. Step 3: Cross multiply
    1,398,541,804.12x = 1,929,964,447.74 × 771,994,025.56
  4. Step 4: Simplify right side
    1,398,541,804.12x = 1,489,921,023,198,484,736
  5. Step 5: Solve for x
    x = 1,489,921,023,198,484,736/1,398,541,804.12
  6. Step 6: Final answer
    x = 1,065,338,925.74

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Double scale
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1.5x scale

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.