Home / 1,278,272,000.52-1,763,997,941.70-713,765,601.72

Finding the Fourth Proportional to 1,278,272,000.52, 1,763,997,941.70 and 713,765,601.72

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Solution

The fourth proportional to 1,278,272,000.52, 1,763,997,941.70 and 713,765,601.72 is: 984,986,803.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,272,000.52 : 1,763,997,941.70 = 713,765,601.72 : x
  2. Step 2: Convert to fraction form
    1,278,272,000.52/1,763,997,941.70 = 713,765,601.72/x
  3. Step 3: Cross multiply
    1,278,272,000.52x = 1,763,997,941.70 × 713,765,601.72
  4. Step 4: Simplify right side
    1,278,272,000.52x = 1,259,081,052,290,342,144
  5. Step 5: Solve for x
    x = 1,259,081,052,290,342,144/1,278,272,000.52
  6. Step 6: Final answer
    x = 984,986,803.89

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Half scale
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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.