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Finding the Fourth Proportional to 879,862.80, 1,319,664.60 and 248,840.40

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Solution

The fourth proportional to 879,862.80, 1,319,664.60 and 248,840.40 is: 373,223.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,862.80 : 1,319,664.60 = 248,840.40 : x
  2. Step 2: Convert to fraction form
    879,862.80/1,319,664.60 = 248,840.40/x
  3. Step 3: Cross multiply
    879,862.80x = 1,319,664.60 × 248,840.40
  4. Step 4: Simplify right side
    879,862.80x = 328,385,866,929.84
  5. Step 5: Solve for x
    x = 328,385,866,929.84/879,862.80
  6. Step 6: Final answer
    x = 373,223.95

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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.