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Finding the Fourth Proportional to 450,630, 621,888.84 and 249,426

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Solution

The fourth proportional to 450,630, 621,888.84 and 249,426 is: 344,218.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,630 : 621,888.84 = 249,426 : x
  2. Step 2: Convert to fraction form
    450,630/621,888.84 = 249,426/x
  3. Step 3: Cross multiply
    450,630x = 621,888.84 × 249,426
  4. Step 4: Simplify right side
    450,630x = 155,115,245,805.84
  5. Step 5: Solve for x
    x = 155,115,245,805.84/450,630
  6. Step 6: Final answer
    x = 344,218.64

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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.