Home / 1,078,185.60-1,617,278.40-679,276.80

Finding the Fourth Proportional to 1,078,185.60, 1,617,278.40 and 679,276.80

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Solution

The fourth proportional to 1,078,185.60, 1,617,278.40 and 679,276.80 is: 1,018,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078,185.60 : 1,617,278.40 = 679,276.80 : x
  2. Step 2: Convert to fraction form
    1,078,185.60/1,617,278.40 = 679,276.80/x
  3. Step 3: Cross multiply
    1,078,185.60x = 1,617,278.40 × 679,276.80
  4. Step 4: Simplify right side
    1,078,185.60x = 1,098,579,696,261.12
  5. Step 5: Solve for x
    x = 1,098,579,696,261.12/1,078,185.60
  6. Step 6: Final answer
    x = 1,018,915.20

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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.