Home / 781,067,971.19-1,077,802,557.37-463,473,488.45

Finding the Fourth Proportional to 781,067,971.19, 1,077,802,557.37 and 463,473,488.45

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Solution

The fourth proportional to 781,067,971.19, 1,077,802,557.37 and 463,473,488.45 is: 639,551,139.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,067,971.19 : 1,077,802,557.37 = 463,473,488.45 : x
  2. Step 2: Convert to fraction form
    781,067,971.19/1,077,802,557.37 = 463,473,488.45/x
  3. Step 3: Cross multiply
    781,067,971.19x = 1,077,802,557.37 × 463,473,488.45
  4. Step 4: Simplify right side
    781,067,971.19x = 499,532,911,124,605,120
  5. Step 5: Solve for x
    x = 499,532,911,124,605,120/781,067,971.19
  6. Step 6: Final answer
    x = 639,551,139.66

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Double scale
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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.