Home / 665,343,140.90-998,014,711.35-493,156,256.90

Finding the Fourth Proportional to 665,343,140.90, 998,014,711.35 and 493,156,256.90

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Solution

The fourth proportional to 665,343,140.90, 998,014,711.35 and 493,156,256.90 is: 739,734,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,343,140.90 : 998,014,711.35 = 493,156,256.90 : x
  2. Step 2: Convert to fraction form
    665,343,140.90/998,014,711.35 = 493,156,256.90/x
  3. Step 3: Cross multiply
    665,343,140.90x = 998,014,711.35 × 493,156,256.90
  4. Step 4: Simplify right side
    665,343,140.90x = 492,177,199,380,499,904
  5. Step 5: Solve for x
    x = 492,177,199,380,499,904/665,343,140.90
  6. Step 6: Final answer
    x = 739,734,385.35

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Similar ratio
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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.