Home / 672,645,615.60-1,008,968,423.40-643,589,078.93

Finding the Fourth Proportional to 672,645,615.60, 1,008,968,423.40 and 643,589,078.93

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Solution

The fourth proportional to 672,645,615.60, 1,008,968,423.40 and 643,589,078.93 is: 965,383,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,645,615.60 : 1,008,968,423.40 = 643,589,078.93 : x
  2. Step 2: Convert to fraction form
    672,645,615.60/1,008,968,423.40 = 643,589,078.93/x
  3. Step 3: Cross multiply
    672,645,615.60x = 1,008,968,423.40 × 643,589,078.93
  4. Step 4: Simplify right side
    672,645,615.60x = 649,361,058,280,415,360
  5. Step 5: Solve for x
    x = 649,361,058,280,415,360/672,645,615.60
  6. Step 6: Final answer
    x = 965,383,618.39

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1.5x scale

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.