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Finding the Fourth Proportional to 991,668.69, 1,487,502.90 and 654,630.37

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Solution

The fourth proportional to 991,668.69, 1,487,502.90 and 654,630.37 is: 981,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,668.69 : 1,487,502.90 = 654,630.37 : x
  2. Step 2: Convert to fraction form
    991,668.69/1,487,502.90 = 654,630.37/x
  3. Step 3: Cross multiply
    991,668.69x = 1,487,502.90 × 654,630.37
  4. Step 4: Simplify right side
    991,668.69x = 973,764,573,803.07
  5. Step 5: Solve for x
    x = 973,764,573,803.07/991,668.69
  6. Step 6: Final answer
    x = 981,945.47

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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.