Home / 1,287,031.81-1,776,104.12-714,070.62

Finding the Fourth Proportional to 1,287,031.81, 1,776,104.12 and 714,070.62

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Solution

The fourth proportional to 1,287,031.81, 1,776,104.12 and 714,070.62 is: 985,417.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,031.81 : 1,776,104.12 = 714,070.62 : x
  2. Step 2: Convert to fraction form
    1,287,031.81/1,776,104.12 = 714,070.62/x
  3. Step 3: Cross multiply
    1,287,031.81x = 1,776,104.12 × 714,070.62
  4. Step 4: Simplify right side
    1,287,031.81x = 1,268,263,770,152.95
  5. Step 5: Solve for x
    x = 1,268,263,770,152.95/1,287,031.81
  6. Step 6: Final answer
    x = 985,417.58

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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.