Home / 1,219,275.12-1,683,421.26-761,087.28

Finding the Fourth Proportional to 1,219,275.12, 1,683,421.26 and 761,087.28

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Solution

The fourth proportional to 1,219,275.12, 1,683,421.26 and 761,087.28 is: 1,050,813.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,275.12 : 1,683,421.26 = 761,087.28 : x
  2. Step 2: Convert to fraction form
    1,219,275.12/1,683,421.26 = 761,087.28/x
  3. Step 3: Cross multiply
    1,219,275.12x = 1,683,421.26 × 761,087.28
  4. Step 4: Simplify right side
    1,219,275.12x = 1,281,230,507,867.57
  5. Step 5: Solve for x
    x = 1,281,230,507,867.57/1,219,275.12
  6. Step 6: Final answer
    x = 1,050,813.30

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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.