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Finding the Fourth Proportional to 496,487.68, 685,139.52 and 270,128.32

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Solution

The fourth proportional to 496,487.68, 685,139.52 and 270,128.32 is: 372,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,487.68 : 685,139.52 = 270,128.32 : x
  2. Step 2: Convert to fraction form
    496,487.68/685,139.52 = 270,128.32/x
  3. Step 3: Cross multiply
    496,487.68x = 685,139.52 × 270,128.32
  4. Step 4: Simplify right side
    496,487.68x = 185,075,587,503.21
  5. Step 5: Solve for x
    x = 185,075,587,503.21/496,487.68
  6. Step 6: Final answer
    x = 372,769.75

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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.