Home / 2,128,520.79-2,937,427.23-1,210,726.40

Finding the Fourth Proportional to 2,128,520.79, 2,937,427.23 and 1,210,726.40

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Solution

The fourth proportional to 2,128,520.79, 2,937,427.23 and 1,210,726.40 is: 1,670,841.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,520.79 : 2,937,427.23 = 1,210,726.40 : x
  2. Step 2: Convert to fraction form
    2,128,520.79/2,937,427.23 = 1,210,726.40/x
  3. Step 3: Cross multiply
    2,128,520.79x = 2,937,427.23 × 1,210,726.40
  4. Step 4: Simplify right side
    2,128,520.79x = 3,556,420,695,439.87
  5. Step 5: Solve for x
    x = 3,556,420,695,439.87/2,128,520.79
  6. Step 6: Final answer
    x = 1,670,841.42

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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.