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Finding the Fourth Proportional to 1,411,258.65, 1,947,544.61 and 867,749.51

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Solution

The fourth proportional to 1,411,258.65, 1,947,544.61 and 867,749.51 is: 1,197,499.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411,258.65 : 1,947,544.61 = 867,749.51 : x
  2. Step 2: Convert to fraction form
    1,411,258.65/1,947,544.61 = 867,749.51/x
  3. Step 3: Cross multiply
    1,411,258.65x = 1,947,544.61 × 867,749.51
  4. Step 4: Simplify right side
    1,411,258.65x = 1,689,980,875,486.91
  5. Step 5: Solve for x
    x = 1,689,980,875,486.91/1,411,258.65
  6. Step 6: Final answer
    x = 1,197,499.04

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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.