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Finding the Fourth Proportional to 406,944.60, 610,416.90 and 386,208.60

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Solution

The fourth proportional to 406,944.60, 610,416.90 and 386,208.60 is: 579,312.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,944.60 : 610,416.90 = 386,208.60 : x
  2. Step 2: Convert to fraction form
    406,944.60/610,416.90 = 386,208.60/x
  3. Step 3: Cross multiply
    406,944.60x = 610,416.90 × 386,208.60
  4. Step 4: Simplify right side
    406,944.60x = 235,748,256,365.34
  5. Step 5: Solve for x
    x = 235,748,256,365.34/406,944.60
  6. Step 6: Final answer
    x = 579,312.90

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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.