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Finding the Fourth Proportional to 488,783.70, 685,230.30 and 488,783.70

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Solution

The fourth proportional to 488,783.70, 685,230.30 and 488,783.70 is: 685,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,783.70 : 685,230.30 = 488,783.70 : x
  2. Step 2: Convert to fraction form
    488,783.70/685,230.30 = 488,783.70/x
  3. Step 3: Cross multiply
    488,783.70x = 685,230.30 × 488,783.70
  4. Step 4: Simplify right side
    488,783.70x = 334,929,401,386.11
  5. Step 5: Solve for x
    x = 334,929,401,386.11/488,783.70
  6. Step 6: Final answer
    x = 685,230.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.