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Finding the Fourth Proportional to 608,102.54, 912,302.46 and 428,538.26

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Solution

The fourth proportional to 608,102.54, 912,302.46 and 428,538.26 is: 642,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,102.54 : 912,302.46 = 428,538.26 : x
  2. Step 2: Convert to fraction form
    608,102.54/912,302.46 = 428,538.26/x
  3. Step 3: Cross multiply
    608,102.54x = 912,302.46 × 428,538.26
  4. Step 4: Simplify right side
    608,102.54x = 390,956,508,802.12
  5. Step 5: Solve for x
    x = 390,956,508,802.12/608,102.54
  6. Step 6: Final answer
    x = 642,912.15

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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.