Home / 939,315.72-1,296,256.16-509,595.74

Finding the Fourth Proportional to 939,315.72, 1,296,256.16 and 509,595.74

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Solution

The fourth proportional to 939,315.72, 1,296,256.16 and 509,595.74 is: 703,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,315.72 : 1,296,256.16 = 509,595.74 : x
  2. Step 2: Convert to fraction form
    939,315.72/1,296,256.16 = 509,595.74/x
  3. Step 3: Cross multiply
    939,315.72x = 1,296,256.16 × 509,595.74
  4. Step 4: Simplify right side
    939,315.72x = 660,566,608,055.50
  5. Step 5: Solve for x
    x = 660,566,608,055.50/939,315.72
  6. Step 6: Final answer
    x = 703,242.36

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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.