Home / 1,345,291,218.45-2,017,936,827.68-1,287,178,145.10

Finding the Fourth Proportional to 1,345,291,218.45, 2,017,936,827.68 and 1,287,178,145.10

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Solution

The fourth proportional to 1,345,291,218.45, 2,017,936,827.68 and 1,287,178,145.10 is: 1,930,767,217.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,291,218.45 : 2,017,936,827.68 = 1,287,178,145.10 : x
  2. Step 2: Convert to fraction form
    1,345,291,218.45/2,017,936,827.68 = 1,287,178,145.10/x
  3. Step 3: Cross multiply
    1,345,291,218.45x = 2,017,936,827.68 × 1,287,178,145.10
  4. Step 4: Simplify right side
    1,345,291,218.45x = 2,597,444,182,775,684,608
  5. Step 5: Solve for x
    x = 2,597,444,182,775,684,608/1,345,291,218.45
  6. Step 6: Final answer
    x = 1,930,767,217.65

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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.