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Finding the Fourth Proportional to 606,943.40, 910,415.10 and 417,986.60

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Solution

The fourth proportional to 606,943.40, 910,415.10 and 417,986.60 is: 626,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,943.40 : 910,415.10 = 417,986.60 : x
  2. Step 2: Convert to fraction form
    606,943.40/910,415.10 = 417,986.60/x
  3. Step 3: Cross multiply
    606,943.40x = 910,415.10 × 417,986.60
  4. Step 4: Simplify right side
    606,943.40x = 380,541,312,237.66
  5. Step 5: Solve for x
    x = 380,541,312,237.66/606,943.40
  6. Step 6: Final answer
    x = 626,979.90

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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.