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Finding the Fourth Proportional to 638,838.90, 956,264.94 and 470,548.98

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Solution

The fourth proportional to 638,838.90, 956,264.94 and 470,548.98 is: 704,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,838.90 : 956,264.94 = 470,548.98 : x
  2. Step 2: Convert to fraction form
    638,838.90/956,264.94 = 470,548.98/x
  3. Step 3: Cross multiply
    638,838.90x = 956,264.94 × 470,548.98
  4. Step 4: Simplify right side
    638,838.90x = 449,969,492,126.76
  5. Step 5: Solve for x
    x = 449,969,492,126.76/638,838.90
  6. Step 6: Final answer
    x = 704,355.19

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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.