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Finding the Fourth Proportional to 539,700.18, 744,637.23 and 310,245.54

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Solution

The fourth proportional to 539,700.18, 744,637.23 and 310,245.54 is: 428,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,700.18 : 744,637.23 = 310,245.54 : x
  2. Step 2: Convert to fraction form
    539,700.18/744,637.23 = 310,245.54/x
  3. Step 3: Cross multiply
    539,700.18x = 744,637.23 × 310,245.54
  4. Step 4: Simplify right side
    539,700.18x = 231,020,379,525.45
  5. Step 5: Solve for x
    x = 231,020,379,525.45/539,700.18
  6. Step 6: Final answer
    x = 428,053.18

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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.