Home / 432,631.64-648,837.92-128,955.72

Finding the Fourth Proportional to 432,631.64, 648,837.92 and 128,955.72

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Solution

The fourth proportional to 432,631.64, 648,837.92 and 128,955.72 is: 193,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,631.64 : 648,837.92 = 128,955.72 : x
  2. Step 2: Convert to fraction form
    432,631.64/648,837.92 = 128,955.72/x
  3. Step 3: Cross multiply
    432,631.64x = 648,837.92 × 128,955.72
  4. Step 4: Simplify right side
    432,631.64x = 83,671,361,136.90
  5. Step 5: Solve for x
    x = 83,671,361,136.90/432,631.64
  6. Step 6: Final answer
    x = 193,400.93

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1.5x scale

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.