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Finding the Fourth Proportional to 654,416.40, 979,291.80 and 453,795.60

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Solution

The fourth proportional to 654,416.40, 979,291.80 and 453,795.60 is: 679,075.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,416.40 : 979,291.80 = 453,795.60 : x
  2. Step 2: Convert to fraction form
    654,416.40/979,291.80 = 453,795.60/x
  3. Step 3: Cross multiply
    654,416.40x = 979,291.80 × 453,795.60
  4. Step 4: Simplify right side
    654,416.40x = 444,398,309,956.08
  5. Step 5: Solve for x
    x = 444,398,309,956.08/654,416.40
  6. Step 6: Final answer
    x = 679,075.75

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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.