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Finding the Fourth Proportional to 525,668.40, 788,502.60 and 407,703.60

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Solution

The fourth proportional to 525,668.40, 788,502.60 and 407,703.60 is: 611,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,668.40 : 788,502.60 = 407,703.60 : x
  2. Step 2: Convert to fraction form
    525,668.40/788,502.60 = 407,703.60/x
  3. Step 3: Cross multiply
    525,668.40x = 788,502.60 × 407,703.60
  4. Step 4: Simplify right side
    525,668.40x = 321,475,348,629.36
  5. Step 5: Solve for x
    x = 321,475,348,629.36/525,668.40
  6. Step 6: Final answer
    x = 611,555.40

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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.