Home / 1,031,142.96-1,423,881.18-644,619.06

Finding the Fourth Proportional to 1,031,142.96, 1,423,881.18 and 644,619.06

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Solution

The fourth proportional to 1,031,142.96, 1,423,881.18 and 644,619.06 is: 890,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031,142.96 : 1,423,881.18 = 644,619.06 : x
  2. Step 2: Convert to fraction form
    1,031,142.96/1,423,881.18 = 644,619.06/x
  3. Step 3: Cross multiply
    1,031,142.96x = 1,423,881.18 × 644,619.06
  4. Step 4: Simplify right side
    1,031,142.96x = 917,860,947,803.29
  5. Step 5: Solve for x
    x = 917,860,947,803.29/1,031,142.96
  6. Step 6: Final answer
    x = 890,139.37

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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.