Home / 668,403.12-1,002,721.59-398,746.02

Finding the Fourth Proportional to 668,403.12, 1,002,721.59 and 398,746.02

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Solution

The fourth proportional to 668,403.12, 1,002,721.59 and 398,746.02 is: 598,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,403.12 : 1,002,721.59 = 398,746.02 : x
  2. Step 2: Convert to fraction form
    668,403.12/1,002,721.59 = 398,746.02/x
  3. Step 3: Cross multiply
    668,403.12x = 1,002,721.59 × 398,746.02
  4. Step 4: Simplify right side
    668,403.12x = 399,831,243,180.57
  5. Step 5: Solve for x
    x = 399,831,243,180.57/668,403.12
  6. Step 6: Final answer
    x = 598,188.77

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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.