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Finding the Fourth Proportional to 620,154.80, 855,802.72 and 348,224.84

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Solution

The fourth proportional to 620,154.80, 855,802.72 and 348,224.84 is: 480,544.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,154.80 : 855,802.72 = 348,224.84 : x
  2. Step 2: Convert to fraction form
    620,154.80/855,802.72 = 348,224.84/x
  3. Step 3: Cross multiply
    620,154.80x = 855,802.72 × 348,224.84
  4. Step 4: Simplify right side
    620,154.80x = 298,011,765,243.57
  5. Step 5: Solve for x
    x = 298,011,765,243.57/620,154.80
  6. Step 6: Final answer
    x = 480,544.16

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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.