Home / 939,428.48-1,296,409.70-509,708.50

Finding the Fourth Proportional to 939,428.48, 1,296,409.70 and 509,708.50

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Solution

The fourth proportional to 939,428.48, 1,296,409.70 and 509,708.50 is: 703,396.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,428.48 : 1,296,409.70 = 509,708.50 : x
  2. Step 2: Convert to fraction form
    939,428.48/1,296,409.70 = 509,708.50/x
  3. Step 3: Cross multiply
    939,428.48x = 1,296,409.70 × 509,708.50
  4. Step 4: Simplify right side
    939,428.48x = 660,791,037,782.88
  5. Step 5: Solve for x
    x = 660,791,037,782.88/939,428.48
  6. Step 6: Final answer
    x = 703,396.85

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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.