Home / 1,690,482.66-2,535,871.61-428,310.28

Finding the Fourth Proportional to 1,690,482.66, 2,535,871.61 and 428,310.28

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Solution

The fourth proportional to 1,690,482.66, 2,535,871.61 and 428,310.28 is: 642,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,690,482.66 : 2,535,871.61 = 428,310.28 : x
  2. Step 2: Convert to fraction form
    1,690,482.66/2,535,871.61 = 428,310.28/x
  3. Step 3: Cross multiply
    1,690,482.66x = 2,535,871.61 × 428,310.28
  4. Step 4: Simplify right side
    1,690,482.66x = 1,086,139,881,154.52
  5. Step 5: Solve for x
    x = 1,086,139,881,154.52/1,690,482.66
  6. Step 6: Final answer
    x = 642,502.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.