Home / 745,521.53-1,028,831.51-405,989.51

Finding the Fourth Proportional to 745,521.53, 1,028,831.51 and 405,989.51

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Solution

The fourth proportional to 745,521.53, 1,028,831.51 and 405,989.51 is: 560,271.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,521.53 : 1,028,831.51 = 405,989.51 : x
  2. Step 2: Convert to fraction form
    745,521.53/1,028,831.51 = 405,989.51/x
  3. Step 3: Cross multiply
    745,521.53x = 1,028,831.51 × 405,989.51
  4. Step 4: Simplify right side
    745,521.53x = 417,694,796,488.28
  5. Step 5: Solve for x
    x = 417,694,796,488.28/745,521.53
  6. Step 6: Final answer
    x = 560,271.95

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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.