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Finding the Fourth Proportional to 876,808.12, 1,210,830.87 and 829,043.35

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Solution

The fourth proportional to 876,808.12, 1,210,830.87 and 829,043.35 is: 1,144,869.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,808.12 : 1,210,830.87 = 829,043.35 : x
  2. Step 2: Convert to fraction form
    876,808.12/1,210,830.87 = 829,043.35/x
  3. Step 3: Cross multiply
    876,808.12x = 1,210,830.87 × 829,043.35
  4. Step 4: Simplify right side
    876,808.12x = 1,003,831,280,748.21
  5. Step 5: Solve for x
    x = 1,003,831,280,748.21/876,808.12
  6. Step 6: Final answer
    x = 1,144,869.96

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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.