Home / 1,636,638.40-2,454,957.60-1,038,275.20

Finding the Fourth Proportional to 1,636,638.40, 2,454,957.60 and 1,038,275.20

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Solution

The fourth proportional to 1,636,638.40, 2,454,957.60 and 1,038,275.20 is: 1,557,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636,638.40 : 2,454,957.60 = 1,038,275.20 : x
  2. Step 2: Convert to fraction form
    1,636,638.40/2,454,957.60 = 1,038,275.20/x
  3. Step 3: Cross multiply
    1,636,638.40x = 2,454,957.60 × 1,038,275.20
  4. Step 4: Simplify right side
    1,636,638.40x = 2,548,921,593,131.52
  5. Step 5: Solve for x
    x = 2,548,921,593,131.52/1,636,638.40
  6. Step 6: Final answer
    x = 1,557,412.80

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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.