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Finding the Fourth Proportional to 1,126,913.09, 1,687,565.48 and 788,369.00

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Solution

The fourth proportional to 1,126,913.09, 1,687,565.48 and 788,369.00 is: 1,180,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,913.09 : 1,687,565.48 = 788,369.00 : x
  2. Step 2: Convert to fraction form
    1,126,913.09/1,687,565.48 = 788,369.00/x
  3. Step 3: Cross multiply
    1,126,913.09x = 1,687,565.48 × 788,369.00
  4. Step 4: Simplify right side
    1,126,913.09x = 1,330,424,297,522.45
  5. Step 5: Solve for x
    x = 1,330,424,297,522.45/1,126,913.09
  6. Step 6: Final answer
    x = 1,180,591.76

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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.