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Finding the Fourth Proportional to 1,300,774.86, 1,946,372.76 and 786,606.30

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Solution

The fourth proportional to 1,300,774.86, 1,946,372.76 and 786,606.30 is: 1,177,013.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,774.86 : 1,946,372.76 = 786,606.30 : x
  2. Step 2: Convert to fraction form
    1,300,774.86/1,946,372.76 = 786,606.30/x
  3. Step 3: Cross multiply
    1,300,774.86x = 1,946,372.76 × 786,606.30
  4. Step 4: Simplify right side
    1,300,774.86x = 1,531,029,075,164.39
  5. Step 5: Solve for x
    x = 1,531,029,075,164.39/1,300,774.86
  6. Step 6: Final answer
    x = 1,177,013.12

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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.