Home / 1,345,291,212.45-2,017,936,818.68-1,287,178,139.10

Finding the Fourth Proportional to 1,345,291,212.45, 2,017,936,818.68 and 1,287,178,139.10

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Solution

The fourth proportional to 1,345,291,212.45, 2,017,936,818.68 and 1,287,178,139.10 is: 1,930,767,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345,291,212.45 : 2,017,936,818.68 = 1,287,178,139.10 : x
  2. Step 2: Convert to fraction form
    1,345,291,212.45/2,017,936,818.68 = 1,287,178,139.10/x
  3. Step 3: Cross multiply
    1,345,291,212.45x = 2,017,936,818.68 × 1,287,178,139.10
  4. Step 4: Simplify right side
    1,345,291,212.45x = 2,597,444,159,083,460,608
  5. Step 5: Solve for x
    x = 2,597,444,159,083,460,608/1,345,291,212.45
  6. Step 6: Final answer
    x = 1,930,767,208.65

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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.