Home / 1,189,868,370.20-1,640,287,777.69-831,523,599.58

Finding the Fourth Proportional to 1,189,868,370.20, 1,640,287,777.69 and 831,523,599.58

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Solution

The fourth proportional to 1,189,868,370.20, 1,640,287,777.69 and 831,523,599.58 is: 1,146,293,179.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,868,370.20 : 1,640,287,777.69 = 831,523,599.58 : x
  2. Step 2: Convert to fraction form
    1,189,868,370.20/1,640,287,777.69 = 831,523,599.58/x
  3. Step 3: Cross multiply
    1,189,868,370.20x = 1,640,287,777.69 × 831,523,599.58
  4. Step 4: Simplify right side
    1,189,868,370.20x = 1,363,937,997,247,322,368
  5. Step 5: Solve for x
    x = 1,363,937,997,247,322,368/1,189,868,370.20
  6. Step 6: Final answer
    x = 1,146,293,179.48

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.