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Finding the Fourth Proportional to 405,000.60, 607,384.80 and 120,679.26

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Solution

The fourth proportional to 405,000.60, 607,384.80 and 120,679.26 is: 180,984.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,000.60 : 607,384.80 = 120,679.26 : x
  2. Step 2: Convert to fraction form
    405,000.60/607,384.80 = 120,679.26/x
  3. Step 3: Cross multiply
    405,000.60x = 607,384.80 × 120,679.26
  4. Step 4: Simplify right side
    405,000.60x = 73,298,748,199.25
  5. Step 5: Solve for x
    x = 73,298,748,199.25/405,000.60
  6. Step 6: Final answer
    x = 180,984.30

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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.