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Finding the Fourth Proportional to 700,639.36, 965,870.40 and 499,085.44

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Solution

The fourth proportional to 700,639.36, 965,870.40 and 499,085.44 is: 688,017.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,639.36 : 965,870.40 = 499,085.44 : x
  2. Step 2: Convert to fraction form
    700,639.36/965,870.40 = 499,085.44/x
  3. Step 3: Cross multiply
    700,639.36x = 965,870.40 × 499,085.44
  4. Step 4: Simplify right side
    700,639.36x = 482,051,853,566.98
  5. Step 5: Solve for x
    x = 482,051,853,566.98/700,639.36
  6. Step 6: Final answer
    x = 688,017.09

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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.