Home / 1,287,985.32-1,777,330.53-714,980.25

Finding the Fourth Proportional to 1,287,985.32, 1,777,330.53 and 714,980.25

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Solution

The fourth proportional to 1,287,985.32, 1,777,330.53 and 714,980.25 is: 986,623.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,985.32 : 1,777,330.53 = 714,980.25 : x
  2. Step 2: Convert to fraction form
    1,287,985.32/1,777,330.53 = 714,980.25/x
  3. Step 3: Cross multiply
    1,287,985.32x = 1,777,330.53 × 714,980.25
  4. Step 4: Simplify right side
    1,287,985.32x = 1,270,756,226,672.03
  5. Step 5: Solve for x
    x = 1,270,756,226,672.03/1,287,985.32
  6. Step 6: Final answer
    x = 986,623.22

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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.