Home / 2,158,214.86-2,978,320.08-1,191,345.81

Finding the Fourth Proportional to 2,158,214.86, 2,978,320.08 and 1,191,345.81

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Solution

The fourth proportional to 2,158,214.86, 2,978,320.08 and 1,191,345.81 is: 1,644,048.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,214.86 : 2,978,320.08 = 1,191,345.81 : x
  2. Step 2: Convert to fraction form
    2,158,214.86/2,978,320.08 = 1,191,345.81/x
  3. Step 3: Cross multiply
    2,158,214.86x = 2,978,320.08 × 1,191,345.81
  4. Step 4: Simplify right side
    2,158,214.86x = 3,548,209,148,146.87
  5. Step 5: Solve for x
    x = 3,548,209,148,146.87/2,158,214.86
  6. Step 6: Final answer
    x = 1,644,048.15

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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.