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Finding the Fourth Proportional to 869,498.60, 1,303,640.40 and 514,329.80

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Solution

The fourth proportional to 869,498.60, 1,303,640.40 and 514,329.80 is: 771,135.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,498.60 : 1,303,640.40 = 514,329.80 : x
  2. Step 2: Convert to fraction form
    869,498.60/1,303,640.40 = 514,329.80/x
  3. Step 3: Cross multiply
    869,498.60x = 1,303,640.40 × 514,329.80
  4. Step 4: Simplify right side
    869,498.60x = 670,501,106,203.92
  5. Step 5: Solve for x
    x = 670,501,106,203.92/869,498.60
  6. Step 6: Final answer
    x = 771,135.35

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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.