Home / 745,165.50-1,028,328.51-405,636.30

Finding the Fourth Proportional to 745,165.50, 1,028,328.51 and 405,636.30

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Solution

The fourth proportional to 745,165.50, 1,028,328.51 and 405,636.30 is: 559,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,165.50 : 1,028,328.51 = 405,636.30 : x
  2. Step 2: Convert to fraction form
    745,165.50/1,028,328.51 = 405,636.30/x
  3. Step 3: Cross multiply
    745,165.50x = 1,028,328.51 × 405,636.30
  4. Step 4: Simplify right side
    745,165.50x = 417,127,371,980.91
  5. Step 5: Solve for x
    x = 417,127,371,980.91/745,165.50
  6. Step 6: Final answer
    x = 559,778.16

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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.