Home / 1,505,887.20-2,078,139.78-817,565.40

Finding the Fourth Proportional to 1,505,887.20, 2,078,139.78 and 817,565.40

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Solution

The fourth proportional to 1,505,887.20, 2,078,139.78 and 817,565.40 is: 1,128,248.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505,887.20 : 2,078,139.78 = 817,565.40 : x
  2. Step 2: Convert to fraction form
    1,505,887.20/2,078,139.78 = 817,565.40/x
  3. Step 3: Cross multiply
    1,505,887.20x = 2,078,139.78 × 817,565.40
  4. Step 4: Simplify right side
    1,505,887.20x = 1,699,015,180,491.61
  5. Step 5: Solve for x
    x = 1,699,015,180,491.61/1,505,887.20
  6. Step 6: Final answer
    x = 1,128,248.64

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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.