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Finding the Fourth Proportional to 673,289.36, 928,771.74 and 431,299.18

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Solution

The fourth proportional to 673,289.36, 928,771.74 and 431,299.18 is: 594,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,289.36 : 928,771.74 = 431,299.18 : x
  2. Step 2: Convert to fraction form
    673,289.36/928,771.74 = 431,299.18/x
  3. Step 3: Cross multiply
    673,289.36x = 928,771.74 × 431,299.18
  4. Step 4: Simplify right side
    673,289.36x = 400,578,492,243.17
  5. Step 5: Solve for x
    x = 400,578,492,243.17/673,289.36
  6. Step 6: Final answer
    x = 594,957.40

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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.