Home / 745,269.86-1,028,490.90-405,756.74

Finding the Fourth Proportional to 745,269.86, 1,028,490.90 and 405,756.74

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Solution

The fourth proportional to 745,269.86, 1,028,490.90 and 405,756.74 is: 559,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,269.86 : 1,028,490.90 = 405,756.74 : x
  2. Step 2: Convert to fraction form
    745,269.86/1,028,490.90 = 405,756.74/x
  3. Step 3: Cross multiply
    745,269.86x = 1,028,490.90 × 405,756.74
  4. Step 4: Simplify right side
    745,269.86x = 417,317,114,703.67
  5. Step 5: Solve for x
    x = 417,317,114,703.67/745,269.86
  6. Step 6: Final answer
    x = 559,954.37

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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.