Home / 1,287,985.60-1,777,330.88-714,980.80

Finding the Fourth Proportional to 1,287,985.60, 1,777,330.88 and 714,980.80

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Solution

The fourth proportional to 1,287,985.60, 1,777,330.88 and 714,980.80 is: 986,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,985.60 : 1,777,330.88 = 714,980.80 : x
  2. Step 2: Convert to fraction form
    1,287,985.60/1,777,330.88 = 714,980.80/x
  3. Step 3: Cross multiply
    1,287,985.60x = 1,777,330.88 × 714,980.80
  4. Step 4: Simplify right side
    1,287,985.60x = 1,270,757,454,447.10
  5. Step 5: Solve for x
    x = 1,270,757,454,447.10/1,287,985.60
  6. Step 6: Final answer
    x = 986,623.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.