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Finding the Fourth Proportional to 620,250, 855,881.19 and 348,315.71

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Solution

The fourth proportional to 620,250, 855,881.19 and 348,315.71 is: 480,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,250 : 855,881.19 = 348,315.71 : x
  2. Step 2: Convert to fraction form
    620,250/855,881.19 = 348,315.71/x
  3. Step 3: Cross multiply
    620,250x = 855,881.19 × 348,315.71
  4. Step 4: Simplify right side
    620,250x = 298,116,860,091.09
  5. Step 5: Solve for x
    x = 298,116,860,091.09/620,250
  6. Step 6: Final answer
    x = 480,639.84

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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.