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Finding the Fourth Proportional to 628,661.34, 867,528.54 and 356,713.01

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Solution

The fourth proportional to 628,661.34, 867,528.54 and 356,713.01 is: 492,250.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,661.34 : 867,528.54 = 356,713.01 : x
  2. Step 2: Convert to fraction form
    628,661.34/867,528.54 = 356,713.01/x
  3. Step 3: Cross multiply
    628,661.34x = 867,528.54 × 356,713.01
  4. Step 4: Simplify right side
    628,661.34x = 309,458,712,426.66
  5. Step 5: Solve for x
    x = 309,458,712,426.66/628,661.34
  6. Step 6: Final answer
    x = 492,250.27

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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.