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Finding the Fourth Proportional to 2,768,948.80, 4,155,280.80 and 971,828.80

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Solution

The fourth proportional to 2,768,948.80, 4,155,280.80 and 971,828.80 is: 1,458,395.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768,948.80 : 4,155,280.80 = 971,828.80 : x
  2. Step 2: Convert to fraction form
    2,768,948.80/4,155,280.80 = 971,828.80/x
  3. Step 3: Cross multiply
    2,768,948.80x = 4,155,280.80 × 971,828.80
  4. Step 4: Simplify right side
    2,768,948.80x = 4,038,221,553,527.04
  5. Step 5: Solve for x
    x = 4,038,221,553,527.04/2,768,948.80
  6. Step 6: Final answer
    x = 1,458,395.17

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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.