Home / 780,024,189.60-1,170,036,284.40-320,292,295.20

Finding the Fourth Proportional to 780,024,189.60, 1,170,036,284.40 and 320,292,295.20

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Solution

The fourth proportional to 780,024,189.60, 1,170,036,284.40 and 320,292,295.20 is: 480,438,442.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,024,189.60 : 1,170,036,284.40 = 320,292,295.20 : x
  2. Step 2: Convert to fraction form
    780,024,189.60/1,170,036,284.40 = 320,292,295.20/x
  3. Step 3: Cross multiply
    780,024,189.60x = 1,170,036,284.40 × 320,292,295.20
  4. Step 4: Simplify right side
    780,024,189.60x = 374,753,606,997,755,968
  5. Step 5: Solve for x
    x = 374,753,606,997,755,968/780,024,189.60
  6. Step 6: Final answer
    x = 480,438,442.80

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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.