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Finding the Fourth Proportional to 1,971,498.40, 2,953,100.40 and 1,639,722.40

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Solution

The fourth proportional to 1,971,498.40, 2,953,100.40 and 1,639,722.40 is: 2,456,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971,498.40 : 2,953,100.40 = 1,639,722.40 : x
  2. Step 2: Convert to fraction form
    1,971,498.40/2,953,100.40 = 1,639,722.40/x
  3. Step 3: Cross multiply
    1,971,498.40x = 2,953,100.40 × 1,639,722.40
  4. Step 4: Simplify right side
    1,971,498.40x = 4,842,264,875,328.96
  5. Step 5: Solve for x
    x = 4,842,264,875,328.96/1,971,498.40
  6. Step 6: Final answer
    x = 2,456,134.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.