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Finding the Fourth Proportional to 626,442.75, 864,491.63 and 339,962.90

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Solution

The fourth proportional to 626,442.75, 864,491.63 and 339,962.90 is: 469,149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,442.75 : 864,491.63 = 339,962.90 : x
  2. Step 2: Convert to fraction form
    626,442.75/864,491.63 = 339,962.90/x
  3. Step 3: Cross multiply
    626,442.75x = 864,491.63 × 339,962.90
  4. Step 4: Simplify right side
    626,442.75x = 293,895,075,538.25
  5. Step 5: Solve for x
    x = 293,895,075,538.25/626,442.75
  6. Step 6: Final answer
    x = 469,149.14

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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.