Home / 1,988,051.60-2,982,574.20-640,341.20

Finding the Fourth Proportional to 1,988,051.60, 2,982,574.20 and 640,341.20

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Solution

The fourth proportional to 1,988,051.60, 2,982,574.20 and 640,341.20 is: 960,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,051.60 : 2,982,574.20 = 640,341.20 : x
  2. Step 2: Convert to fraction form
    1,988,051.60/2,982,574.20 = 640,341.20/x
  3. Step 3: Cross multiply
    1,988,051.60x = 2,982,574.20 × 640,341.20
  4. Step 4: Simplify right side
    1,988,051.60x = 1,909,865,142,317.04
  5. Step 5: Solve for x
    x = 1,909,865,142,317.04/1,988,051.60
  6. Step 6: Final answer
    x = 960,671.82

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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.