Home / 817,315,914.15-1,128,538,613.13-658,040,091.75

Finding the Fourth Proportional to 817,315,914.15, 1,128,538,613.13 and 658,040,091.75

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Solution

The fourth proportional to 817,315,914.15, 1,128,538,613.13 and 658,040,091.75 is: 908,612,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,315,914.15 : 1,128,538,613.13 = 658,040,091.75 : x
  2. Step 2: Convert to fraction form
    817,315,914.15/1,128,538,613.13 = 658,040,091.75/x
  3. Step 3: Cross multiply
    817,315,914.15x = 1,128,538,613.13 × 658,040,091.75
  4. Step 4: Simplify right side
    817,315,914.15x = 742,623,652,527,483,008
  5. Step 5: Solve for x
    x = 742,623,652,527,483,008/817,315,914.15
  6. Step 6: Final answer
    x = 908,612,740.40

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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.