Home / 861,992,306.16-1,189,549,336.96-465,515,257.51

Finding the Fourth Proportional to 861,992,306.16, 1,189,549,336.96 and 465,515,257.51

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Solution

The fourth proportional to 861,992,306.16, 1,189,549,336.96 and 465,515,257.51 is: 642,411,030.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,992,306.16 : 1,189,549,336.96 = 465,515,257.51 : x
  2. Step 2: Convert to fraction form
    861,992,306.16/1,189,549,336.96 = 465,515,257.51/x
  3. Step 3: Cross multiply
    861,992,306.16x = 1,189,549,336.96 × 465,515,257.51
  4. Step 4: Simplify right side
    861,992,306.16x = 553,753,365,922,039,232
  5. Step 5: Solve for x
    x = 553,753,365,922,039,232/861,992,306.16
  6. Step 6: Final answer
    x = 642,411,030.78

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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.