Home / 1,398,444,097.39-1,929,853,043.37-771,912,643.57

Finding the Fourth Proportional to 1,398,444,097.39, 1,929,853,043.37 and 771,912,643.57

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Solution

The fourth proportional to 1,398,444,097.39, 1,929,853,043.37 and 771,912,643.57 is: 1,065,239,552.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,444,097.39 : 1,929,853,043.37 = 771,912,643.57 : x
  2. Step 2: Convert to fraction form
    1,398,444,097.39/1,929,853,043.37 = 771,912,643.57/x
  3. Step 3: Cross multiply
    1,398,444,097.39x = 1,929,853,043.37 × 771,912,643.57
  4. Step 4: Simplify right side
    1,398,444,097.39x = 1,489,677,964,409,346,560
  5. Step 5: Solve for x
    x = 1,489,677,964,409,346,560/1,398,444,097.39
  6. Step 6: Final answer
    x = 1,065,239,552.44

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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.