Home / 1,190,728.64-1,643,206.95-646,864.79

Finding the Fourth Proportional to 1,190,728.64, 1,643,206.95 and 646,864.79

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Solution

The fourth proportional to 1,190,728.64, 1,643,206.95 and 646,864.79 is: 892,674.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,728.64 : 1,643,206.95 = 646,864.79 : x
  2. Step 2: Convert to fraction form
    1,190,728.64/1,643,206.95 = 646,864.79/x
  3. Step 3: Cross multiply
    1,190,728.64x = 1,643,206.95 × 646,864.79
  4. Step 4: Simplify right side
    1,190,728.64x = 1,062,932,710,422.26
  5. Step 5: Solve for x
    x = 1,062,932,710,422.26/1,190,728.64
  6. Step 6: Final answer
    x = 892,674.18

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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.