Home / 1,129,455.81-1,558,685.57-646,021.89

Finding the Fourth Proportional to 1,129,455.81, 1,558,685.57 and 646,021.89

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Solution

The fourth proportional to 1,129,455.81, 1,558,685.57 and 646,021.89 is: 891,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,455.81 : 1,558,685.57 = 646,021.89 : x
  2. Step 2: Convert to fraction form
    1,129,455.81/1,558,685.57 = 646,021.89/x
  3. Step 3: Cross multiply
    1,129,455.81x = 1,558,685.57 × 646,021.89
  4. Step 4: Simplify right side
    1,129,455.81x = 1,006,944,994,617.02
  5. Step 5: Solve for x
    x = 1,006,944,994,617.02/1,129,455.81
  6. Step 6: Final answer
    x = 891,531.11

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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.