Home / 1,278,794,235.80-1,918,191,353.70-865,545,714.20

Finding the Fourth Proportional to 1,278,794,235.80, 1,918,191,353.70 and 865,545,714.20

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Solution

The fourth proportional to 1,278,794,235.80, 1,918,191,353.70 and 865,545,714.20 is: 1,298,318,571.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,794,235.80 : 1,918,191,353.70 = 865,545,714.20 : x
  2. Step 2: Convert to fraction form
    1,278,794,235.80/1,918,191,353.70 = 865,545,714.20/x
  3. Step 3: Cross multiply
    1,278,794,235.80x = 1,918,191,353.70 × 865,545,714.20
  4. Step 4: Simplify right side
    1,278,794,235.80x = 1,660,282,305,210,531,328
  5. Step 5: Solve for x
    x = 1,660,282,305,210,531,328/1,278,794,235.80
  6. Step 6: Final answer
    x = 1,298,318,571.30

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Double scale
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1.5x scale

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.