Home / 1,918,530.77-2,878,080.46-638,720.24

Finding the Fourth Proportional to 1,918,530.77, 2,878,080.46 and 638,720.24

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Solution

The fourth proportional to 1,918,530.77, 2,878,080.46 and 638,720.24 is: 958,175.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,530.77 : 2,878,080.46 = 638,720.24 : x
  2. Step 2: Convert to fraction form
    1,918,530.77/2,878,080.46 = 638,720.24/x
  3. Step 3: Cross multiply
    1,918,530.77x = 2,878,080.46 × 638,720.24
  4. Step 4: Simplify right side
    1,918,530.77x = 1,838,288,226,163.31
  5. Step 5: Solve for x
    x = 1,838,288,226,163.31/1,918,530.77
  6. Step 6: Final answer
    x = 958,175.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.