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Finding the Fourth Proportional to 508,405,004.40, 762,607,506.60 and 393,472,030.80

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Solution

The fourth proportional to 508,405,004.40, 762,607,506.60 and 393,472,030.80 is: 590,208,046.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,405,004.40 : 762,607,506.60 = 393,472,030.80 : x
  2. Step 2: Convert to fraction form
    508,405,004.40/762,607,506.60 = 393,472,030.80/x
  3. Step 3: Cross multiply
    508,405,004.40x = 762,607,506.60 × 393,472,030.80
  4. Step 4: Simplify right side
    508,405,004.40x = 300,064,724,325,226,432
  5. Step 5: Solve for x
    x = 300,064,724,325,226,432/508,405,004.40
  6. Step 6: Final answer
    x = 590,208,046.20

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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.