Home / 709,831.30-979,562.18-387,541.38

Finding the Fourth Proportional to 709,831.30, 979,562.18 and 387,541.38

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Solution

The fourth proportional to 709,831.30, 979,562.18 and 387,541.38 is: 534,804.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,831.30 : 979,562.18 = 387,541.38 : x
  2. Step 2: Convert to fraction form
    709,831.30/979,562.18 = 387,541.38/x
  3. Step 3: Cross multiply
    709,831.30x = 979,562.18 × 387,541.38
  4. Step 4: Simplify right side
    709,831.30x = 379,620,879,033.01
  5. Step 5: Solve for x
    x = 379,620,879,033.01/709,831.30
  6. Step 6: Final answer
    x = 534,804.37

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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.