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Finding the Fourth Proportional to 632,609.46, 872,999.64 and 346,128.93

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Solution

The fourth proportional to 632,609.46, 872,999.64 and 346,128.93 is: 477,657.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,609.46 : 872,999.64 = 346,128.93 : x
  2. Step 2: Convert to fraction form
    632,609.46/872,999.64 = 346,128.93/x
  3. Step 3: Cross multiply
    632,609.46x = 872,999.64 × 346,128.93
  4. Step 4: Simplify right side
    632,609.46x = 302,170,431,283.59
  5. Step 5: Solve for x
    x = 302,170,431,283.59/632,609.46
  6. Step 6: Final answer
    x = 477,657.15

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Double scale
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Similar ratio
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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.