Home / 1,287,716,458.20-1,931,574,687.30-1,081,092,197.40

Finding the Fourth Proportional to 1,287,716,458.20, 1,931,574,687.30 and 1,081,092,197.40

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Solution

The fourth proportional to 1,287,716,458.20, 1,931,574,687.30 and 1,081,092,197.40 is: 1,621,638,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,716,458.20 : 1,931,574,687.30 = 1,081,092,197.40 : x
  2. Step 2: Convert to fraction form
    1,287,716,458.20/1,931,574,687.30 = 1,081,092,197.40/x
  3. Step 3: Cross multiply
    1,287,716,458.20x = 1,931,574,687.30 × 1,081,092,197.40
  4. Step 4: Simplify right side
    1,287,716,458.20x = 2,088,210,323,135,375,104
  5. Step 5: Solve for x
    x = 2,088,210,323,135,375,104/1,287,716,458.20
  6. Step 6: Final answer
    x = 1,621,638,296.10

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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.