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Finding the Fourth Proportional to 628,949.51, 867,835.01 and 370,907.40

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Solution

The fourth proportional to 628,949.51, 867,835.01 and 370,907.40 is: 511,784.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,949.51 : 867,835.01 = 370,907.40 : x
  2. Step 2: Convert to fraction form
    628,949.51/867,835.01 = 370,907.40/x
  3. Step 3: Cross multiply
    628,949.51x = 867,835.01 × 370,907.40
  4. Step 4: Simplify right side
    628,949.51x = 321,886,431,369.72
  5. Step 5: Solve for x
    x = 321,886,431,369.72/628,949.51
  6. Step 6: Final answer
    x = 511,784.22

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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.