Home / 652,127.66-899,945.38-393,968.72

Finding the Fourth Proportional to 652,127.66, 899,945.38 and 393,968.72

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Solution

The fourth proportional to 652,127.66, 899,945.38 and 393,968.72 is: 543,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,127.66 : 899,945.38 = 393,968.72 : x
  2. Step 2: Convert to fraction form
    652,127.66/899,945.38 = 393,968.72/x
  3. Step 3: Cross multiply
    652,127.66x = 899,945.38 × 393,968.72
  4. Step 4: Simplify right side
    652,127.66x = 354,550,329,428.51
  5. Step 5: Solve for x
    x = 354,550,329,428.51/652,127.66
  6. Step 6: Final answer
    x = 543,682.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.