Home / 729,144.56-1,006,430.65-423,289.64

Finding the Fourth Proportional to 729,144.56, 1,006,430.65 and 423,289.64

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Solution

The fourth proportional to 729,144.56, 1,006,430.65 and 423,289.64 is: 584,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,144.56 : 1,006,430.65 = 423,289.64 : x
  2. Step 2: Convert to fraction form
    729,144.56/1,006,430.65 = 423,289.64/x
  3. Step 3: Cross multiply
    729,144.56x = 1,006,430.65 × 423,289.64
  4. Step 4: Simplify right side
    729,144.56x = 426,011,661,433.09
  5. Step 5: Solve for x
    x = 426,011,661,433.09/729,144.56
  6. Step 6: Final answer
    x = 584,262.28

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Double scale
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1.5x scale

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.