Home / 1,315,349.06-1,815,485.00-771,659.51

Finding the Fourth Proportional to 1,315,349.06, 1,815,485.00 and 771,659.51

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Solution

The fourth proportional to 1,315,349.06, 1,815,485.00 and 771,659.51 is: 1,065,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,349.06 : 1,815,485.00 = 771,659.51 : x
  2. Step 2: Convert to fraction form
    1,315,349.06/1,815,485.00 = 771,659.51/x
  3. Step 3: Cross multiply
    1,315,349.06x = 1,815,485.00 × 771,659.51
  4. Step 4: Simplify right side
    1,315,349.06x = 1,400,936,252,576.63
  5. Step 5: Solve for x
    x = 1,400,936,252,576.63/1,315,349.06
  6. Step 6: Final answer
    x = 1,065,068.05

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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.