Home / 776,997.75-1,163,305.35-411,430.98

Finding the Fourth Proportional to 776,997.75, 1,163,305.35 and 411,430.98

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Solution

The fourth proportional to 776,997.75, 1,163,305.35 and 411,430.98 is: 615,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,997.75 : 1,163,305.35 = 411,430.98 : x
  2. Step 2: Convert to fraction form
    776,997.75/1,163,305.35 = 411,430.98/x
  3. Step 3: Cross multiply
    776,997.75x = 1,163,305.35 × 411,430.98
  4. Step 4: Simplify right side
    776,997.75x = 478,619,860,189.74
  5. Step 5: Solve for x
    x = 478,619,860,189.74/776,997.75
  6. Step 6: Final answer
    x = 615,986.16

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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.