Home / 939,606.10-1,296,656.40-509,886.22

Finding the Fourth Proportional to 939,606.10, 1,296,656.40 and 509,886.22

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Solution

The fourth proportional to 939,606.10, 1,296,656.40 and 509,886.22 is: 703,642.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,606.10 : 1,296,656.40 = 509,886.22 : x
  2. Step 2: Convert to fraction form
    939,606.10/1,296,656.40 = 509,886.22/x
  3. Step 3: Cross multiply
    939,606.10x = 1,296,656.40 × 509,886.22
  4. Step 4: Simplify right side
    939,606.10x = 661,147,230,434.81
  5. Step 5: Solve for x
    x = 661,147,230,434.81/939,606.10
  6. Step 6: Final answer
    x = 703,642.97

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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.