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Finding the Fourth Proportional to 683,316.78, 1,024,978.82 and 448,148.68

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Solution

The fourth proportional to 683,316.78, 1,024,978.82 and 448,148.68 is: 672,225.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,316.78 : 1,024,978.82 = 448,148.68 : x
  2. Step 2: Convert to fraction form
    683,316.78/1,024,978.82 = 448,148.68/x
  3. Step 3: Cross multiply
    683,316.78x = 1,024,978.82 × 448,148.68
  4. Step 4: Simplify right side
    683,316.78x = 459,342,905,210.96
  5. Step 5: Solve for x
    x = 459,342,905,210.96/683,316.78
  6. Step 6: Final answer
    x = 672,225.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.