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Finding the Fourth Proportional to 540,402.60, 808,271.10 and 456,421.80

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Solution

The fourth proportional to 540,402.60, 808,271.10 and 456,421.80 is: 682,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,402.60 : 808,271.10 = 456,421.80 : x
  2. Step 2: Convert to fraction form
    540,402.60/808,271.10 = 456,421.80/x
  3. Step 3: Cross multiply
    540,402.60x = 808,271.10 × 456,421.80
  4. Step 4: Simplify right side
    540,402.60x = 368,912,550,349.98
  5. Step 5: Solve for x
    x = 368,912,550,349.98/540,402.60
  6. Step 6: Final answer
    x = 682,662.43

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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.