Home / 1,031,621.33-1,423,642.60-644,661.45

Finding the Fourth Proportional to 1,031,621.33, 1,423,642.60 and 644,661.45

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Solution

The fourth proportional to 1,031,621.33, 1,423,642.60 and 644,661.45 is: 889,636.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031,621.33 : 1,423,642.60 = 644,661.45 : x
  2. Step 2: Convert to fraction form
    1,031,621.33/1,423,642.60 = 644,661.45/x
  3. Step 3: Cross multiply
    1,031,621.33x = 1,423,642.60 × 644,661.45
  4. Step 4: Simplify right side
    1,031,621.33x = 917,767,502,797.77
  5. Step 5: Solve for x
    x = 917,767,502,797.77/1,031,621.33
  6. Step 6: Final answer
    x = 889,636.03

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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.