Home / 1,287,612.40-1,776,988.14-714,652.60

Finding the Fourth Proportional to 1,287,612.40, 1,776,988.14 and 714,652.60

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Solution

The fourth proportional to 1,287,612.40, 1,776,988.14 and 714,652.60 is: 986,266.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,612.40 : 1,776,988.14 = 714,652.60 : x
  2. Step 2: Convert to fraction form
    1,287,612.40/1,776,988.14 = 714,652.60/x
  3. Step 3: Cross multiply
    1,287,612.40x = 1,776,988.14 × 714,652.60
  4. Step 4: Simplify right side
    1,287,612.40x = 1,269,929,194,420.16
  5. Step 5: Solve for x
    x = 1,269,929,194,420.16/1,287,612.40
  6. Step 6: Final answer
    x = 986,266.67

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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.