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Finding the Fourth Proportional to 917,673.10, 1,266,353.70 and 509,800.60

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Solution

The fourth proportional to 917,673.10, 1,266,353.70 and 509,800.60 is: 703,505.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,673.10 : 1,266,353.70 = 509,800.60 : x
  2. Step 2: Convert to fraction form
    917,673.10/1,266,353.70 = 509,800.60/x
  3. Step 3: Cross multiply
    917,673.10x = 1,266,353.70 × 509,800.60
  4. Step 4: Simplify right side
    917,673.10x = 645,587,876,072.22
  5. Step 5: Solve for x
    x = 645,587,876,072.22/917,673.10
  6. Step 6: Final answer
    x = 703,505.29

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1.5x scale

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.