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Finding the Fourth Proportional to 869,085.60, 1,303,239.60 and 336,429.60

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Solution

The fourth proportional to 869,085.60, 1,303,239.60 and 336,429.60 is: 504,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,085.60 : 1,303,239.60 = 336,429.60 : x
  2. Step 2: Convert to fraction form
    869,085.60/1,303,239.60 = 336,429.60/x
  3. Step 3: Cross multiply
    869,085.60x = 1,303,239.60 × 336,429.60
  4. Step 4: Simplify right side
    869,085.60x = 438,448,377,332.16
  5. Step 5: Solve for x
    x = 438,448,377,332.16/869,085.60
  6. Step 6: Final answer
    x = 504,493.89

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1.5x scale

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.