Home / 745,271.86-1,028,493.66-405,758.74

Finding the Fourth Proportional to 745,271.86, 1,028,493.66 and 405,758.74

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Solution

The fourth proportional to 745,271.86, 1,028,493.66 and 405,758.74 is: 559,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,271.86 : 1,028,493.66 = 405,758.74 : x
  2. Step 2: Convert to fraction form
    745,271.86/1,028,493.66 = 405,758.74/x
  3. Step 3: Cross multiply
    745,271.86x = 1,028,493.66 × 405,758.74
  4. Step 4: Simplify right side
    745,271.86x = 417,320,291,579.59
  5. Step 5: Solve for x
    x = 417,320,291,579.59/745,271.86
  6. Step 6: Final answer
    x = 559,957.13

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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.