Home / 1,310,869.72-1,809,870.24-821,574.64

Finding the Fourth Proportional to 1,310,869.72, 1,809,870.24 and 821,574.64

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Solution

The fourth proportional to 1,310,869.72, 1,809,870.24 and 821,574.64 is: 1,134,318.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,869.72 : 1,809,870.24 = 821,574.64 : x
  2. Step 2: Convert to fraction form
    1,310,869.72/1,809,870.24 = 821,574.64/x
  3. Step 3: Cross multiply
    1,310,869.72x = 1,809,870.24 × 821,574.64
  4. Step 4: Simplify right side
    1,310,869.72x = 1,486,943,490,874.71
  5. Step 5: Solve for x
    x = 1,486,943,490,874.71/1,310,869.72
  6. Step 6: Final answer
    x = 1,134,318.28

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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.