Home / 500,259.11-690,426.41-306,782.51

Finding the Fourth Proportional to 500,259.11, 690,426.41 and 306,782.51

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Solution

The fourth proportional to 500,259.11, 690,426.41 and 306,782.51 is: 423,402.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,259.11 : 690,426.41 = 306,782.51 : x
  2. Step 2: Convert to fraction form
    500,259.11/690,426.41 = 306,782.51/x
  3. Step 3: Cross multiply
    500,259.11x = 690,426.41 × 306,782.51
  4. Step 4: Simplify right side
    500,259.11x = 211,810,742,044.05
  5. Step 5: Solve for x
    x = 211,810,742,044.05/500,259.11
  6. Step 6: Final answer
    x = 423,402.07

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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.