Home / 939,113.88-1,295,942.13-509,379.72

Finding the Fourth Proportional to 939,113.88, 1,295,942.13 and 509,379.72

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Solution

The fourth proportional to 939,113.88, 1,295,942.13 and 509,379.72 is: 702,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,113.88 : 1,295,942.13 = 509,379.72 : x
  2. Step 2: Convert to fraction form
    939,113.88/1,295,942.13 = 509,379.72/x
  3. Step 3: Cross multiply
    939,113.88x = 1,295,942.13 × 509,379.72
  4. Step 4: Simplify right side
    939,113.88x = 660,126,639,315.60
  5. Step 5: Solve for x
    x = 660,126,639,315.60/939,113.88
  6. Step 6: Final answer
    x = 702,925.02

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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.