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Finding the Fourth Proportional to 614,456.40, 920,129.40 and 490,040.40

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Solution

The fourth proportional to 614,456.40, 920,129.40 and 490,040.40 is: 733,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,456.40 : 920,129.40 = 490,040.40 : x
  2. Step 2: Convert to fraction form
    614,456.40/920,129.40 = 490,040.40/x
  3. Step 3: Cross multiply
    614,456.40x = 920,129.40 × 490,040.40
  4. Step 4: Simplify right side
    614,456.40x = 450,900,579,227.76
  5. Step 5: Solve for x
    x = 450,900,579,227.76/614,456.40
  6. Step 6: Final answer
    x = 733,820.30

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1.5x scale

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.