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Finding the Fourth Proportional to 455,479.50, 628,561.76 and 254,275.50

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Solution

The fourth proportional to 455,479.50, 628,561.76 and 254,275.50 is: 350,900.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,479.50 : 628,561.76 = 254,275.50 : x
  2. Step 2: Convert to fraction form
    455,479.50/628,561.76 = 254,275.50/x
  3. Step 3: Cross multiply
    455,479.50x = 628,561.76 × 254,275.50
  4. Step 4: Simplify right side
    455,479.50x = 159,827,854,533.50
  5. Step 5: Solve for x
    x = 159,827,854,533.50/455,479.50
  6. Step 6: Final answer
    x = 350,900.22

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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.