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Finding the Fourth Proportional to 386,210.80, 579,316.20 and 370,464.40

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Solution

The fourth proportional to 386,210.80, 579,316.20 and 370,464.40 is: 555,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,210.80 : 579,316.20 = 370,464.40 : x
  2. Step 2: Convert to fraction form
    386,210.80/579,316.20 = 370,464.40/x
  3. Step 3: Cross multiply
    386,210.80x = 579,316.20 × 370,464.40
  4. Step 4: Simplify right side
    386,210.80x = 214,616,028,443.28
  5. Step 5: Solve for x
    x = 214,616,028,443.28/386,210.80
  6. Step 6: Final answer
    x = 555,696.60

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Similar ratio
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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.