Home / 1,226,142.45-1,692,124.43-742,434.21

Finding the Fourth Proportional to 1,226,142.45, 1,692,124.43 and 742,434.21

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Solution

The fourth proportional to 1,226,142.45, 1,692,124.43 and 742,434.21 is: 1,024,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,142.45 : 1,692,124.43 = 742,434.21 : x
  2. Step 2: Convert to fraction form
    1,226,142.45/1,692,124.43 = 742,434.21/x
  3. Step 3: Cross multiply
    1,226,142.45x = 1,692,124.43 × 742,434.21
  4. Step 4: Simplify right side
    1,226,142.45x = 1,256,291,060,696.58
  5. Step 5: Solve for x
    x = 1,256,291,060,696.58/1,226,142.45
  6. Step 6: Final answer
    x = 1,024,588.18

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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.