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Finding the Fourth Proportional to 631,975,425.60, 947,963,138.40 and 325,865,409.60

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Solution

The fourth proportional to 631,975,425.60, 947,963,138.40 and 325,865,409.60 is: 488,798,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,975,425.60 : 947,963,138.40 = 325,865,409.60 : x
  2. Step 2: Convert to fraction form
    631,975,425.60/947,963,138.40 = 325,865,409.60/x
  3. Step 3: Cross multiply
    631,975,425.60x = 947,963,138.40 × 325,865,409.60
  4. Step 4: Simplify right side
    631,975,425.60x = 308,908,396,380,417,472
  5. Step 5: Solve for x
    x = 308,908,396,380,417,472/631,975,425.60
  6. Step 6: Final answer
    x = 488,798,114.40

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Double scale
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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.