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Finding the Fourth Proportional to 976,817.60, 1,465,485.60 and 345,665.60

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Solution

The fourth proportional to 976,817.60, 1,465,485.60 and 345,665.60 is: 518,590.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,817.60 : 1,465,485.60 = 345,665.60 : x
  2. Step 2: Convert to fraction form
    976,817.60/1,465,485.60 = 345,665.60/x
  3. Step 3: Cross multiply
    976,817.60x = 1,465,485.60 × 345,665.60
  4. Step 4: Simplify right side
    976,817.60x = 506,567,959,215.36
  5. Step 5: Solve for x
    x = 506,567,959,215.36/976,817.60
  6. Step 6: Final answer
    x = 518,590.12

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Double scale
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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.