Home / 1,490,170,379.91-2,056,342,466.56-821,077,981.68

Finding the Fourth Proportional to 1,490,170,379.91, 2,056,342,466.56 and 821,077,981.68

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Solution

The fourth proportional to 1,490,170,379.91, 2,056,342,466.56 and 821,077,981.68 is: 1,133,036,560.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,170,379.91 : 2,056,342,466.56 = 821,077,981.68 : x
  2. Step 2: Convert to fraction form
    1,490,170,379.91/2,056,342,466.56 = 821,077,981.68/x
  3. Step 3: Cross multiply
    1,490,170,379.91x = 2,056,342,466.56 × 821,077,981.68
  4. Step 4: Simplify right side
    1,490,170,379.91x = 1,688,417,522,085,181,184
  5. Step 5: Solve for x
    x = 1,688,417,522,085,181,184/1,490,170,379.91
  6. Step 6: Final answer
    x = 1,133,036,560.68

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Double scale
Find fourth proportional to 1,490,170,380.91, 2,056,342,467.94 and 821,077,982.68
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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.