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Finding the Fourth Proportional to 879,486.40, 1,319,229.60 and 830,497.60

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Solution

The fourth proportional to 879,486.40, 1,319,229.60 and 830,497.60 is: 1,245,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,486.40 : 1,319,229.60 = 830,497.60 : x
  2. Step 2: Convert to fraction form
    879,486.40/1,319,229.60 = 830,497.60/x
  3. Step 3: Cross multiply
    879,486.40x = 1,319,229.60 × 830,497.60
  4. Step 4: Simplify right side
    879,486.40x = 1,095,617,016,648.96
  5. Step 5: Solve for x
    x = 1,095,617,016,648.96/879,486.40
  6. Step 6: Final answer
    x = 1,245,746.40

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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.