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Finding the Fourth Proportional to 1,318,905.01, 1,819,511.04 and 774,795.34

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Solution

The fourth proportional to 1,318,905.01, 1,819,511.04 and 774,795.34 is: 1,068,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,905.01 : 1,819,511.04 = 774,795.34 : x
  2. Step 2: Convert to fraction form
    1,318,905.01/1,819,511.04 = 774,795.34/x
  3. Step 3: Cross multiply
    1,318,905.01x = 1,819,511.04 × 774,795.34
  4. Step 4: Simplify right side
    1,318,905.01x = 1,409,748,674,870.55
  5. Step 5: Solve for x
    x = 1,409,748,674,870.55/1,318,905.01
  6. Step 6: Final answer
    x = 1,068,878.10

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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.