Home / 879,287.20-1,318,930.80-874,038.40

Finding the Fourth Proportional to 879,287.20, 1,318,930.80 and 874,038.40

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Solution

The fourth proportional to 879,287.20, 1,318,930.80 and 874,038.40 is: 1,311,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,287.20 : 1,318,930.80 = 874,038.40 : x
  2. Step 2: Convert to fraction form
    879,287.20/1,318,930.80 = 874,038.40/x
  3. Step 3: Cross multiply
    879,287.20x = 1,318,930.80 × 874,038.40
  4. Step 4: Simplify right side
    879,287.20x = 1,152,796,166,142.72
  5. Step 5: Solve for x
    x = 1,152,796,166,142.72/879,287.20
  6. Step 6: Final answer
    x = 1,311,057.60

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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.