Home / 1,913,917,421.85-2,870,876,134.37-459,894,845.85

Finding the Fourth Proportional to 1,913,917,421.85, 2,870,876,134.37 and 459,894,845.85

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Solution

The fourth proportional to 1,913,917,421.85, 2,870,876,134.37 and 459,894,845.85 is: 689,842,269.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913,917,421.85 : 2,870,876,134.37 = 459,894,845.85 : x
  2. Step 2: Convert to fraction form
    1,913,917,421.85/2,870,876,134.37 = 459,894,845.85/x
  3. Step 3: Cross multiply
    1,913,917,421.85x = 2,870,876,134.37 × 459,894,845.85
  4. Step 4: Simplify right side
    1,913,917,421.85x = 1,320,301,137,270,535,168
  5. Step 5: Solve for x
    x = 1,320,301,137,270,535,168/1,913,917,421.85
  6. Step 6: Final answer
    x = 689,842,269.16

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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.