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Finding the Fourth Proportional to 562,642.81, 776,537.48 and 321,004.22

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Solution

The fourth proportional to 562,642.81, 776,537.48 and 321,004.22 is: 443,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,642.81 : 776,537.48 = 321,004.22 : x
  2. Step 2: Convert to fraction form
    562,642.81/776,537.48 = 321,004.22/x
  3. Step 3: Cross multiply
    562,642.81x = 776,537.48 × 321,004.22
  4. Step 4: Simplify right side
    562,642.81x = 249,271,804,987.99
  5. Step 5: Solve for x
    x = 249,271,804,987.99/562,642.81
  6. Step 6: Final answer
    x = 443,037.40

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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.