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Finding the Fourth Proportional to 911,364.80, 1,248,549.04 and 877,289.60

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Solution

The fourth proportional to 911,364.80, 1,248,549.04 and 877,289.60 is: 1,201,866.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,364.80 : 1,248,549.04 = 877,289.60 : x
  2. Step 2: Convert to fraction form
    911,364.80/1,248,549.04 = 877,289.60/x
  3. Step 3: Cross multiply
    911,364.80x = 1,248,549.04 × 877,289.60
  4. Step 4: Simplify right side
    911,364.80x = 1,095,339,087,881.98
  5. Step 5: Solve for x
    x = 1,095,339,087,881.98/911,364.80
  6. Step 6: Final answer
    x = 1,201,866.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.