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Finding the Fourth Proportional to 907,605.40, 1,361,408.10 and 866,271.10

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Solution

The fourth proportional to 907,605.40, 1,361,408.10 and 866,271.10 is: 1,299,406.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,605.40 : 1,361,408.10 = 866,271.10 : x
  2. Step 2: Convert to fraction form
    907,605.40/1,361,408.10 = 866,271.10/x
  3. Step 3: Cross multiply
    907,605.40x = 1,361,408.10 × 866,271.10
  4. Step 4: Simplify right side
    907,605.40x = 1,179,348,492,335.91
  5. Step 5: Solve for x
    x = 1,179,348,492,335.91/907,605.40
  6. Step 6: Final answer
    x = 1,299,406.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.