Home / 1,490,443.50-2,056,816.89-811,384.86

Finding the Fourth Proportional to 1,490,443.50, 2,056,816.89 and 811,384.86

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Solution

The fourth proportional to 1,490,443.50, 2,056,816.89 and 811,384.86 is: 1,119,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,443.50 : 2,056,816.89 = 811,384.86 : x
  2. Step 2: Convert to fraction form
    1,490,443.50/2,056,816.89 = 811,384.86/x
  3. Step 3: Cross multiply
    1,490,443.50x = 2,056,816.89 × 811,384.86
  4. Step 4: Simplify right side
    1,490,443.50x = 1,668,870,084,338.29
  5. Step 5: Solve for x
    x = 1,668,870,084,338.29/1,490,443.50
  6. Step 6: Final answer
    x = 1,119,713.75

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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.