Home / 1,386,437.51-1,912,955.87-805,315.34

Finding the Fourth Proportional to 1,386,437.51, 1,912,955.87 and 805,315.34

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Solution

The fourth proportional to 1,386,437.51, 1,912,955.87 and 805,315.34 is: 1,111,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,437.51 : 1,912,955.87 = 805,315.34 : x
  2. Step 2: Convert to fraction form
    1,386,437.51/1,912,955.87 = 805,315.34/x
  3. Step 3: Cross multiply
    1,386,437.51x = 1,912,955.87 × 805,315.34
  4. Step 4: Simplify right side
    1,386,437.51x = 1,540,532,698,359.45
  5. Step 5: Solve for x
    x = 1,540,532,698,359.45/1,386,437.51
  6. Step 6: Final answer
    x = 1,111,144.70

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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.