Home / 432,629.64-648,834.93-128,953.71

Finding the Fourth Proportional to 432,629.64, 648,834.93 and 128,953.71

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Solution

The fourth proportional to 432,629.64, 648,834.93 and 128,953.71 is: 193,397.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,629.64 : 648,834.93 = 128,953.71 : x
  2. Step 2: Convert to fraction form
    432,629.64/648,834.93 = 128,953.71/x
  3. Step 3: Cross multiply
    432,629.64x = 648,834.93 × 128,953.71
  4. Step 4: Simplify right side
    432,629.64x = 83,669,671,401.09
  5. Step 5: Solve for x
    x = 83,669,671,401.09/432,629.64
  6. Step 6: Final answer
    x = 193,397.92

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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.