Home / 739,143.30-1,108,390.95-339,651.30

Finding the Fourth Proportional to 739,143.30, 1,108,390.95 and 339,651.30

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Solution

The fourth proportional to 739,143.30, 1,108,390.95 and 339,651.30 is: 509,328.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,143.30 : 1,108,390.95 = 339,651.30 : x
  2. Step 2: Convert to fraction form
    739,143.30/1,108,390.95 = 339,651.30/x
  3. Step 3: Cross multiply
    739,143.30x = 1,108,390.95 × 339,651.30
  4. Step 4: Simplify right side
    739,143.30x = 376,466,427,075.74
  5. Step 5: Solve for x
    x = 376,466,427,075.74/739,143.30
  6. Step 6: Final answer
    x = 509,328.07

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.