Home / 660,798,121.20-991,197,181.80-354,688,105.20

Finding the Fourth Proportional to 660,798,121.20, 991,197,181.80 and 354,688,105.20

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Solution

The fourth proportional to 660,798,121.20, 991,197,181.80 and 354,688,105.20 is: 532,032,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,798,121.20 : 991,197,181.80 = 354,688,105.20 : x
  2. Step 2: Convert to fraction form
    660,798,121.20/991,197,181.80 = 354,688,105.20/x
  3. Step 3: Cross multiply
    660,798,121.20x = 991,197,181.80 × 354,688,105.20
  4. Step 4: Simplify right side
    660,798,121.20x = 351,565,850,292,221,888
  5. Step 5: Solve for x
    x = 351,565,850,292,221,888/660,798,121.20
  6. Step 6: Final answer
    x = 532,032,157.80

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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.