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Finding the Fourth Proportional to 426,841.80, 638,880.30 and 302,425.80

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Solution

The fourth proportional to 426,841.80, 638,880.30 and 302,425.80 is: 452,659.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,841.80 : 638,880.30 = 302,425.80 : x
  2. Step 2: Convert to fraction form
    426,841.80/638,880.30 = 302,425.80/x
  3. Step 3: Cross multiply
    426,841.80x = 638,880.30 × 302,425.80
  4. Step 4: Simplify right side
    426,841.80x = 193,213,885,831.74
  5. Step 5: Solve for x
    x = 193,213,885,831.74/426,841.80
  6. Step 6: Final answer
    x = 452,659.24

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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.