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Finding the Fourth Proportional to 630,950.09, 870,811.09 and 401,267.90

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Solution

The fourth proportional to 630,950.09, 870,811.09 and 401,267.90 is: 553,813.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,950.09 : 870,811.09 = 401,267.90 : x
  2. Step 2: Convert to fraction form
    630,950.09/870,811.09 = 401,267.90/x
  3. Step 3: Cross multiply
    630,950.09x = 870,811.09 × 401,267.90
  4. Step 4: Simplify right side
    630,950.09x = 349,428,538,554.87
  5. Step 5: Solve for x
    x = 349,428,538,554.87/630,950.09
  6. Step 6: Final answer
    x = 553,813.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.