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Finding the Fourth Proportional to 455,484.75, 628,569 and 254,280.75

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Solution

The fourth proportional to 455,484.75, 628,569 and 254,280.75 is: 350,907.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,484.75 : 628,569 = 254,280.75 : x
  2. Step 2: Convert to fraction form
    455,484.75/628,569 = 254,280.75/x
  3. Step 3: Cross multiply
    455,484.75x = 628,569 × 254,280.75
  4. Step 4: Simplify right side
    455,484.75x = 159,832,996,746.75
  5. Step 5: Solve for x
    x = 159,832,996,746.75/455,484.75
  6. Step 6: Final answer
    x = 350,907.46

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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.