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Finding the Fourth Proportional to 415,095.80, 622,643.70 and 374,417.60

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Solution

The fourth proportional to 415,095.80, 622,643.70 and 374,417.60 is: 561,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,095.80 : 622,643.70 = 374,417.60 : x
  2. Step 2: Convert to fraction form
    415,095.80/622,643.70 = 374,417.60/x
  3. Step 3: Cross multiply
    415,095.80x = 622,643.70 × 374,417.60
  4. Step 4: Simplify right side
    415,095.80x = 233,128,759,809.12
  5. Step 5: Solve for x
    x = 233,128,759,809.12/415,095.80
  6. Step 6: Final answer
    x = 561,626.40

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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.