Home / 1,405,807.74-1,940,157.90-1,013,663.28

Finding the Fourth Proportional to 1,405,807.74, 1,940,157.90 and 1,013,663.28

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Solution

The fourth proportional to 1,405,807.74, 1,940,157.90 and 1,013,663.28 is: 1,398,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,807.74 : 1,940,157.90 = 1,013,663.28 : x
  2. Step 2: Convert to fraction form
    1,405,807.74/1,940,157.90 = 1,013,663.28/x
  3. Step 3: Cross multiply
    1,405,807.74x = 1,940,157.90 × 1,013,663.28
  4. Step 4: Simplify right side
    1,405,807.74x = 1,966,666,820,631.91
  5. Step 5: Solve for x
    x = 1,966,666,820,631.91/1,405,807.74
  6. Step 6: Final answer
    x = 1,398,958.59

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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.