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Finding the Fourth Proportional to 609,172.96, 840,686.16 and 340,900.96

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Solution

The fourth proportional to 609,172.96, 840,686.16 and 340,900.96 is: 470,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,172.96 : 840,686.16 = 340,900.96 : x
  2. Step 2: Convert to fraction form
    609,172.96/840,686.16 = 340,900.96/x
  3. Step 3: Cross multiply
    609,172.96x = 840,686.16 × 340,900.96
  4. Step 4: Simplify right side
    609,172.96x = 286,590,719,002.71
  5. Step 5: Solve for x
    x = 286,590,719,002.71/609,172.96
  6. Step 6: Final answer
    x = 470,458.70

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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.