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Finding the Fourth Proportional to 916,989, 1,265,420.17 and 549,673.64

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Solution

The fourth proportional to 916,989, 1,265,420.17 and 549,673.64 is: 758,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,989 : 1,265,420.17 = 549,673.64 : x
  2. Step 2: Convert to fraction form
    916,989/1,265,420.17 = 549,673.64/x
  3. Step 3: Cross multiply
    916,989x = 1,265,420.17 × 549,673.64
  4. Step 4: Simplify right side
    916,989x = 695,568,101,897.85
  5. Step 5: Solve for x
    x = 695,568,101,897.85/916,989
  6. Step 6: Final answer
    x = 758,534.84

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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.