Home / 387,111,856.40-580,933,205.40-171,855,587.60

Finding the Fourth Proportional to 387,111,856.40, 580,933,205.40 and 171,855,587.60

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Solution

The fourth proportional to 387,111,856.40, 580,933,205.40 and 171,855,587.60 is: 257,901,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,111,856.40 : 580,933,205.40 = 171,855,587.60 : x
  2. Step 2: Convert to fraction form
    387,111,856.40/580,933,205.40 = 171,855,587.60/x
  3. Step 3: Cross multiply
    387,111,856.40x = 580,933,205.40 × 171,855,587.60
  4. Step 4: Simplify right side
    387,111,856.40x = 99,836,617,370,368,480
  5. Step 5: Solve for x
    x = 99,836,617,370,368,480/387,111,856.40
  6. Step 6: Final answer
    x = 257,901,213.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.