Home / 745,167.50-1,028,331.27-405,638.30

Finding the Fourth Proportional to 745,167.50, 1,028,331.27 and 405,638.30

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Solution

The fourth proportional to 745,167.50, 1,028,331.27 and 405,638.30 is: 559,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,167.50 : 1,028,331.27 = 405,638.30 : x
  2. Step 2: Convert to fraction form
    745,167.50/1,028,331.27 = 405,638.30/x
  3. Step 3: Cross multiply
    745,167.50x = 1,028,331.27 × 405,638.30
  4. Step 4: Simplify right side
    745,167.50x = 417,130,548,199.64
  5. Step 5: Solve for x
    x = 417,130,548,199.64/745,167.50
  6. Step 6: Final answer
    x = 559,780.92

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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.