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Finding the Fourth Proportional to 917,866.32, 1,266,646.32 and 504,409.92

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Solution

The fourth proportional to 917,866.32, 1,266,646.32 and 504,409.92 is: 696,080.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,866.32 : 1,266,646.32 = 504,409.92 : x
  2. Step 2: Convert to fraction form
    917,866.32/1,266,646.32 = 504,409.92/x
  3. Step 3: Cross multiply
    917,866.32x = 1,266,646.32 × 504,409.92
  4. Step 4: Simplify right side
    917,866.32x = 638,908,968,939.49
  5. Step 5: Solve for x
    x = 638,908,968,939.49/917,866.32
  6. Step 6: Final answer
    x = 696,080.63

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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.