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Finding the Fourth Proportional to 631,975,426.60, 947,963,139.90 and 325,865,410.60

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Solution

The fourth proportional to 631,975,426.60, 947,963,139.90 and 325,865,410.60 is: 488,798,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,975,426.60 : 947,963,139.90 = 325,865,410.60 : x
  2. Step 2: Convert to fraction form
    631,975,426.60/947,963,139.90 = 325,865,410.60/x
  3. Step 3: Cross multiply
    631,975,426.60x = 947,963,139.90 × 325,865,410.60
  4. Step 4: Simplify right side
    631,975,426.60x = 308,908,397,817,178,752
  5. Step 5: Solve for x
    x = 308,908,397,817,178,752/631,975,426.60
  6. Step 6: Final answer
    x = 488,798,115.90

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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.