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Finding the Fourth Proportional to 673,272.50, 928,030.68 and 455,401.71

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Solution

The fourth proportional to 673,272.50, 928,030.68 and 455,401.71 is: 627,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,272.50 : 928,030.68 = 455,401.71 : x
  2. Step 2: Convert to fraction form
    673,272.50/928,030.68 = 455,401.71/x
  3. Step 3: Cross multiply
    673,272.50x = 928,030.68 × 455,401.71
  4. Step 4: Simplify right side
    673,272.50x = 422,626,758,604.46
  5. Step 5: Solve for x
    x = 422,626,758,604.46/673,272.50
  6. Step 6: Final answer
    x = 627,720.22

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1.5x scale

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.