Home / 1,428,490.31-1,971,219.51-783,952.02

Finding the Fourth Proportional to 1,428,490.31, 1,971,219.51 and 783,952.02

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Solution

The fourth proportional to 1,428,490.31, 1,971,219.51 and 783,952.02 is: 1,081,800.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,490.31 : 1,971,219.51 = 783,952.02 : x
  2. Step 2: Convert to fraction form
    1,428,490.31/1,971,219.51 = 783,952.02/x
  3. Step 3: Cross multiply
    1,428,490.31x = 1,971,219.51 × 783,952.02
  4. Step 4: Simplify right side
    1,428,490.31x = 1,545,341,516,727.91
  5. Step 5: Solve for x
    x = 1,545,341,516,727.91/1,428,490.31
  6. Step 6: Final answer
    x = 1,081,800.49

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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.