Home / 939,621.51-1,296,681.09-509,901.54

Finding the Fourth Proportional to 939,621.51, 1,296,681.09 and 509,901.54

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Solution

The fourth proportional to 939,621.51, 1,296,681.09 and 509,901.54 is: 703,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,621.51 : 1,296,681.09 = 509,901.54 : x
  2. Step 2: Convert to fraction form
    939,621.51/1,296,681.09 = 509,901.54/x
  3. Step 3: Cross multiply
    939,621.51x = 1,296,681.09 × 509,901.54
  4. Step 4: Simplify right side
    939,621.51x = 661,179,684,679.88
  5. Step 5: Solve for x
    x = 661,179,684,679.88/939,621.51
  6. Step 6: Final answer
    x = 703,665.97

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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.