Home / 721,586,194.94-1,082,788,746.44-389,588,783.64

Finding the Fourth Proportional to 721,586,194.94, 1,082,788,746.44 and 389,588,783.64

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Solution

The fourth proportional to 721,586,194.94, 1,082,788,746.44 and 389,588,783.64 is: 584,604,242.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,586,194.94 : 1,082,788,746.44 = 389,588,783.64 : x
  2. Step 2: Convert to fraction form
    721,586,194.94/1,082,788,746.44 = 389,588,783.64/x
  3. Step 3: Cross multiply
    721,586,194.94x = 1,082,788,746.44 × 389,588,783.64
  4. Step 4: Simplify right side
    721,586,194.94x = 421,842,350,664,640,000
  5. Step 5: Solve for x
    x = 421,842,350,664,640,000/721,586,194.94
  6. Step 6: Final answer
    x = 584,604,242.19

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Double scale
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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.