Home / 745,276.86-1,028,500.56-405,763.74

Finding the Fourth Proportional to 745,276.86, 1,028,500.56 and 405,763.74

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Solution

The fourth proportional to 745,276.86, 1,028,500.56 and 405,763.74 is: 559,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,276.86 : 1,028,500.56 = 405,763.74 : x
  2. Step 2: Convert to fraction form
    745,276.86/1,028,500.56 = 405,763.74/x
  3. Step 3: Cross multiply
    745,276.86x = 1,028,500.56 × 405,763.74
  4. Step 4: Simplify right side
    745,276.86x = 417,328,233,817.69
  5. Step 5: Solve for x
    x = 417,328,233,817.69/745,276.86
  6. Step 6: Final answer
    x = 559,964.03

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1.5x scale

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.