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Finding the Fourth Proportional to 604,609.40, 906,914.10 and 155,329.40

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Solution

The fourth proportional to 604,609.40, 906,914.10 and 155,329.40 is: 232,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,609.40 : 906,914.10 = 155,329.40 : x
  2. Step 2: Convert to fraction form
    604,609.40/906,914.10 = 155,329.40/x
  3. Step 3: Cross multiply
    604,609.40x = 906,914.10 × 155,329.40
  4. Step 4: Simplify right side
    604,609.40x = 140,870,423,004.54
  5. Step 5: Solve for x
    x = 140,870,423,004.54/604,609.40
  6. Step 6: Final answer
    x = 232,994.10

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Double scale
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Similar ratio
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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.