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Finding the Fourth Proportional to 1,262,977.48, 1,743,407.58 and 779,737.96

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Solution

The fourth proportional to 1,262,977.48, 1,743,407.58 and 779,737.96 is: 1,076,346.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,977.48 : 1,743,407.58 = 779,737.96 : x
  2. Step 2: Convert to fraction form
    1,262,977.48/1,743,407.58 = 779,737.96/x
  3. Step 3: Cross multiply
    1,262,977.48x = 1,743,407.58 × 779,737.96
  4. Step 4: Simplify right side
    1,262,977.48x = 1,359,401,069,877.74
  5. Step 5: Solve for x
    x = 1,359,401,069,877.74/1,262,977.48
  6. Step 6: Final answer
    x = 1,076,346.25

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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.