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Finding the Fourth Proportional to 531,728.40, 797,592.60 and 307,779.60

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Solution

The fourth proportional to 531,728.40, 797,592.60 and 307,779.60 is: 461,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,728.40 : 797,592.60 = 307,779.60 : x
  2. Step 2: Convert to fraction form
    531,728.40/797,592.60 = 307,779.60/x
  3. Step 3: Cross multiply
    531,728.40x = 797,592.60 × 307,779.60
  4. Step 4: Simplify right side
    531,728.40x = 245,482,731,390.96
  5. Step 5: Solve for x
    x = 245,482,731,390.96/531,728.40
  6. Step 6: Final answer
    x = 461,669.40

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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.