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Finding the Fourth Proportional to 648,635.63, 972,956.88 and 425,409.66

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Solution

The fourth proportional to 648,635.63, 972,956.88 and 425,409.66 is: 638,116.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,635.63 : 972,956.88 = 425,409.66 : x
  2. Step 2: Convert to fraction form
    648,635.63/972,956.88 = 425,409.66/x
  3. Step 3: Cross multiply
    648,635.63x = 972,956.88 × 425,409.66
  4. Step 4: Simplify right side
    648,635.63x = 413,905,255,515.46
  5. Step 5: Solve for x
    x = 413,905,255,515.46/648,635.63
  6. Step 6: Final answer
    x = 638,116.75

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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.