Home / 939,631.83-1,296,692.76-509,911.95

Finding the Fourth Proportional to 939,631.83, 1,296,692.76 and 509,911.95

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Solution

The fourth proportional to 939,631.83, 1,296,692.76 and 509,911.95 is: 703,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,631.83 : 1,296,692.76 = 509,911.95 : x
  2. Step 2: Convert to fraction form
    939,631.83/1,296,692.76 = 509,911.95/x
  3. Step 3: Cross multiply
    939,631.83x = 1,296,692.76 × 509,911.95
  4. Step 4: Simplify right side
    939,631.83x = 661,199,133,802.48
  5. Step 5: Solve for x
    x = 661,199,133,802.48/939,631.83
  6. Step 6: Final answer
    x = 703,678.94

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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.