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Finding the Fourth Proportional to 658,693.40, 908,646.26 and 400,649.27

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Solution

The fourth proportional to 658,693.40, 908,646.26 and 400,649.27 is: 552,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,693.40 : 908,646.26 = 400,649.27 : x
  2. Step 2: Convert to fraction form
    658,693.40/908,646.26 = 400,649.27/x
  3. Step 3: Cross multiply
    658,693.40x = 908,646.26 × 400,649.27
  4. Step 4: Simplify right side
    658,693.40x = 364,048,454,210.75
  5. Step 5: Solve for x
    x = 364,048,454,210.75/658,693.40
  6. Step 6: Final answer
    x = 552,682.72

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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.