Home / 879,749.64-1,320,287.76-643,701.24

Finding the Fourth Proportional to 879,749.64, 1,320,287.76 and 643,701.24

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Solution

The fourth proportional to 879,749.64, 1,320,287.76 and 643,701.24 is: 966,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,749.64 : 1,320,287.76 = 643,701.24 : x
  2. Step 2: Convert to fraction form
    879,749.64/1,320,287.76 = 643,701.24/x
  3. Step 3: Cross multiply
    879,749.64x = 1,320,287.76 × 643,701.24
  4. Step 4: Simplify right side
    879,749.64x = 849,870,868,268.82
  5. Step 5: Solve for x
    x = 849,870,868,268.82/879,749.64
  6. Step 6: Final answer
    x = 966,037.19

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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.