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Finding the Fourth Proportional to 867,326.70, 1,300,241.58 and 417,428.58

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Solution

The fourth proportional to 867,326.70, 1,300,241.58 and 417,428.58 is: 625,782.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,326.70 : 1,300,241.58 = 417,428.58 : x
  2. Step 2: Convert to fraction form
    867,326.70/1,300,241.58 = 417,428.58/x
  3. Step 3: Cross multiply
    867,326.70x = 1,300,241.58 × 417,428.58
  4. Step 4: Simplify right side
    867,326.70x = 542,757,996,396.36
  5. Step 5: Solve for x
    x = 542,757,996,396.36/867,326.70
  6. Step 6: Final answer
    x = 625,782.64

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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.