Home / 939,463.79-1,296,455.69-509,742.86

Finding the Fourth Proportional to 939,463.79, 1,296,455.69 and 509,742.86

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Solution

The fourth proportional to 939,463.79, 1,296,455.69 and 509,742.86 is: 703,442.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,463.79 : 1,296,455.69 = 509,742.86 : x
  2. Step 2: Convert to fraction form
    939,463.79/1,296,455.69 = 509,742.86/x
  3. Step 3: Cross multiply
    939,463.79x = 1,296,455.69 × 509,742.86
  4. Step 4: Simplify right side
    939,463.79x = 660,859,026,075.95
  5. Step 5: Solve for x
    x = 660,859,026,075.95/939,463.79
  6. Step 6: Final answer
    x = 703,442.79

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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.