Home / 720,071,548.20-1,080,107,322.30-691,853,999.40

Finding the Fourth Proportional to 720,071,548.20, 1,080,107,322.30 and 691,853,999.40

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Solution

The fourth proportional to 720,071,548.20, 1,080,107,322.30 and 691,853,999.40 is: 1,037,780,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,071,548.20 : 1,080,107,322.30 = 691,853,999.40 : x
  2. Step 2: Convert to fraction form
    720,071,548.20/1,080,107,322.30 = 691,853,999.40/x
  3. Step 3: Cross multiply
    720,071,548.20x = 1,080,107,322.30 × 691,853,999.40
  4. Step 4: Simplify right side
    720,071,548.20x = 747,276,570,714,479,744
  5. Step 5: Solve for x
    x = 747,276,570,714,479,744/720,071,548.20
  6. Step 6: Final answer
    x = 1,037,780,999.10

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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.