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Finding the Fourth Proportional to 545,848.30, 818,881.80 and 457,712.20

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Solution

The fourth proportional to 545,848.30, 818,881.80 and 457,712.20 is: 686,659.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,848.30 : 818,881.80 = 457,712.20 : x
  2. Step 2: Convert to fraction form
    545,848.30/818,881.80 = 457,712.20/x
  3. Step 3: Cross multiply
    545,848.30x = 818,881.80 × 457,712.20
  4. Step 4: Simplify right side
    545,848.30x = 374,812,190,217.96
  5. Step 5: Solve for x
    x = 374,812,190,217.96/545,848.30
  6. Step 6: Final answer
    x = 686,659.99

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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.