Home / 1,261,212,049.52-1,740,438,894.78-696,684,781.47

Finding the Fourth Proportional to 1,261,212,049.52, 1,740,438,894.78 and 696,684,781.47

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Solution

The fourth proportional to 1,261,212,049.52, 1,740,438,894.78 and 696,684,781.47 is: 961,406,364.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,212,049.52 : 1,740,438,894.78 = 696,684,781.47 : x
  2. Step 2: Convert to fraction form
    1,261,212,049.52/1,740,438,894.78 = 696,684,781.47/x
  3. Step 3: Cross multiply
    1,261,212,049.52x = 1,740,438,894.78 × 696,684,781.47
  4. Step 4: Simplify right side
    1,261,212,049.52x = 1,212,537,291,071,692,544
  5. Step 5: Solve for x
    x = 1,212,537,291,071,692,544/1,261,212,049.52
  6. Step 6: Final answer
    x = 961,406,364.25

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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.