Home / 380,829.63-571,119.95-128,042.28

Finding the Fourth Proportional to 380,829.63, 571,119.95 and 128,042.28

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Solution

The fourth proportional to 380,829.63, 571,119.95 and 128,042.28 is: 192,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,829.63 : 571,119.95 = 128,042.28 : x
  2. Step 2: Convert to fraction form
    380,829.63/571,119.95 = 128,042.28/x
  3. Step 3: Cross multiply
    380,829.63x = 571,119.95 × 128,042.28
  4. Step 4: Simplify right side
    380,829.63x = 73,127,497,055.67
  5. Step 5: Solve for x
    x = 73,127,497,055.67/380,829.63
  6. Step 6: Final answer
    x = 192,021.55

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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.