Home / 687,159.02-1,030,804.11-213,717.26

Finding the Fourth Proportional to 687,159.02, 1,030,804.11 and 213,717.26

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Solution

The fourth proportional to 687,159.02, 1,030,804.11 and 213,717.26 is: 320,596.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,159.02 : 1,030,804.11 = 213,717.26 : x
  2. Step 2: Convert to fraction form
    687,159.02/1,030,804.11 = 213,717.26/x
  3. Step 3: Cross multiply
    687,159.02x = 1,030,804.11 × 213,717.26
  4. Step 4: Simplify right side
    687,159.02x = 220,300,624,831.92
  5. Step 5: Solve for x
    x = 220,300,624,831.92/687,159.02
  6. Step 6: Final answer
    x = 320,596.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.