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Finding the Fourth Proportional to 545,903.20, 818,077.20 and 402,630.40

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Solution

The fourth proportional to 545,903.20, 818,077.20 and 402,630.40 is: 603,372.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,903.20 : 818,077.20 = 402,630.40 : x
  2. Step 2: Convert to fraction form
    545,903.20/818,077.20 = 402,630.40/x
  3. Step 3: Cross multiply
    545,903.20x = 818,077.20 × 402,630.40
  4. Step 4: Simplify right side
    545,903.20x = 329,382,750,266.88
  5. Step 5: Solve for x
    x = 329,382,750,266.88/545,903.20
  6. Step 6: Final answer
    x = 603,372.08

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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.