Home / 1,005,640,856.40-1,508,525,046.60-315,575,346.72

Finding the Fourth Proportional to 1,005,640,856.40, 1,508,525,046.60 and 315,575,346.72

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Solution

The fourth proportional to 1,005,640,856.40, 1,508,525,046.60 and 315,575,346.72 is: 473,383,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,640,856.40 : 1,508,525,046.60 = 315,575,346.72 : x
  2. Step 2: Convert to fraction form
    1,005,640,856.40/1,508,525,046.60 = 315,575,346.72/x
  3. Step 3: Cross multiply
    1,005,640,856.40x = 1,508,525,046.60 × 315,575,346.72
  4. Step 4: Simplify right side
    1,005,640,856.40x = 476,053,314,616,599,168
  5. Step 5: Solve for x
    x = 476,053,314,616,599,168/1,005,640,856.40
  6. Step 6: Final answer
    x = 473,383,028.93

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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.