Home / 1,191,972-1,644,921.36-655,428

Finding the Fourth Proportional to 1,191,972, 1,644,921.36 and 655,428

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Solution

The fourth proportional to 1,191,972, 1,644,921.36 and 655,428 is: 904,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,972 : 1,644,921.36 = 655,428 : x
  2. Step 2: Convert to fraction form
    1,191,972/1,644,921.36 = 655,428/x
  3. Step 3: Cross multiply
    1,191,972x = 1,644,921.36 × 655,428
  4. Step 4: Simplify right side
    1,191,972x = 1,078,127,517,142.08
  5. Step 5: Solve for x
    x = 1,078,127,517,142.08/1,191,972
  6. Step 6: Final answer
    x = 904,490.64

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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.