Home / 1,152,005.20-1,728,007.80-868,152.40

Finding the Fourth Proportional to 1,152,005.20, 1,728,007.80 and 868,152.40

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Solution

The fourth proportional to 1,152,005.20, 1,728,007.80 and 868,152.40 is: 1,302,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,005.20 : 1,728,007.80 = 868,152.40 : x
  2. Step 2: Convert to fraction form
    1,152,005.20/1,728,007.80 = 868,152.40/x
  3. Step 3: Cross multiply
    1,152,005.20x = 1,728,007.80 × 868,152.40
  4. Step 4: Simplify right side
    1,152,005.20x = 1,500,174,118,788.72
  5. Step 5: Solve for x
    x = 1,500,174,118,788.72/1,152,005.20
  6. Step 6: Final answer
    x = 1,302,228.60

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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.