Home / 1,008,021,379.70-1,512,032,069.55-317,998,385.30

Finding the Fourth Proportional to 1,008,021,379.70, 1,512,032,069.55 and 317,998,385.30

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Solution

The fourth proportional to 1,008,021,379.70, 1,512,032,069.55 and 317,998,385.30 is: 476,997,577.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,021,379.70 : 1,512,032,069.55 = 317,998,385.30 : x
  2. Step 2: Convert to fraction form
    1,008,021,379.70/1,512,032,069.55 = 317,998,385.30/x
  3. Step 3: Cross multiply
    1,008,021,379.70x = 1,512,032,069.55 × 317,998,385.30
  4. Step 4: Simplify right side
    1,008,021,379.70x = 480,823,756,638,717,312
  5. Step 5: Solve for x
    x = 480,823,756,638,717,312/1,008,021,379.70
  6. Step 6: Final answer
    x = 476,997,577.95

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Double scale
Find fourth proportional to 1,008,021,380.70, 1,512,032,071.05 and 317,998,386.30
Similar ratio
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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.