Home / 450,654.42-621,971.40-257,061.18

Finding the Fourth Proportional to 450,654.42, 621,971.40 and 257,061.18

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Solution

The fourth proportional to 450,654.42, 621,971.40 and 257,061.18 is: 354,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,654.42 : 621,971.40 = 257,061.18 : x
  2. Step 2: Convert to fraction form
    450,654.42/621,971.40 = 257,061.18/x
  3. Step 3: Cross multiply
    450,654.42x = 621,971.40 × 257,061.18
  4. Step 4: Simplify right side
    450,654.42x = 159,884,702,010.25
  5. Step 5: Solve for x
    x = 159,884,702,010.25/450,654.42
  6. Step 6: Final answer
    x = 354,783.39

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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.