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Finding the Fourth Proportional to 638,778, 956,173.98 and 470,488.32

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Solution

The fourth proportional to 638,778, 956,173.98 and 470,488.32 is: 704,264.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,778 : 956,173.98 = 470,488.32 : x
  2. Step 2: Convert to fraction form
    638,778/956,173.98 = 470,488.32/x
  3. Step 3: Cross multiply
    638,778x = 956,173.98 × 470,488.32
  4. Step 4: Simplify right side
    638,778x = 449,868,689,477.91
  5. Step 5: Solve for x
    x = 449,868,689,477.91/638,778
  6. Step 6: Final answer
    x = 704,264.53

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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.