Home / 1,385,499,440.80-1,911,989,587.44-758,990,141.20

Finding the Fourth Proportional to 1,385,499,440.80, 1,911,989,587.44 and 758,990,141.20

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Solution

The fourth proportional to 1,385,499,440.80, 1,911,989,587.44 and 758,990,141.20 is: 1,047,406,591.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,499,440.80 : 1,911,989,587.44 = 758,990,141.20 : x
  2. Step 2: Convert to fraction form
    1,385,499,440.80/1,911,989,587.44 = 758,990,141.20/x
  3. Step 3: Cross multiply
    1,385,499,440.80x = 1,911,989,587.44 × 758,990,141.20
  4. Step 4: Simplify right side
    1,385,499,440.80x = 1,451,181,246,944,015,360
  5. Step 5: Solve for x
    x = 1,451,181,246,944,015,360/1,385,499,440.80
  6. Step 6: Final answer
    x = 1,047,406,591.59

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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.