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Finding the Fourth Proportional to 604,811.60, 907,217.40 and 309,899.60

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Solution

The fourth proportional to 604,811.60, 907,217.40 and 309,899.60 is: 464,849.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,811.60 : 907,217.40 = 309,899.60 : x
  2. Step 2: Convert to fraction form
    604,811.60/907,217.40 = 309,899.60/x
  3. Step 3: Cross multiply
    604,811.60x = 907,217.40 × 309,899.60
  4. Step 4: Simplify right side
    604,811.60x = 281,146,309,373.04
  5. Step 5: Solve for x
    x = 281,146,309,373.04/604,811.60
  6. Step 6: Final answer
    x = 464,849.40

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Half scale
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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.