Home / 903,205,851.60-1,244,101,704.48-638,432,645.22

Finding the Fourth Proportional to 903,205,851.60, 1,244,101,704.48 and 638,432,645.22

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Solution

The fourth proportional to 903,205,851.60, 1,244,101,704.48 and 638,432,645.22 is: 879,395,478.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,205,851.60 : 1,244,101,704.48 = 638,432,645.22 : x
  2. Step 2: Convert to fraction form
    903,205,851.60/1,244,101,704.48 = 638,432,645.22/x
  3. Step 3: Cross multiply
    903,205,851.60x = 1,244,101,704.48 × 638,432,645.22
  4. Step 4: Simplify right side
    903,205,851.60x = 794,275,142,113,877,120
  5. Step 5: Solve for x
    x = 794,275,142,113,877,120/903,205,851.60
  6. Step 6: Final answer
    x = 879,395,478.57

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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.