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Finding the Fourth Proportional to 553,702.20, 828,803.70 and 434,729.40

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Solution

The fourth proportional to 553,702.20, 828,803.70 and 434,729.40 is: 650,720.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,702.20 : 828,803.70 = 434,729.40 : x
  2. Step 2: Convert to fraction form
    553,702.20/828,803.70 = 434,729.40/x
  3. Step 3: Cross multiply
    553,702.20x = 828,803.70 × 434,729.40
  4. Step 4: Simplify right side
    553,702.20x = 360,305,335,218.78
  5. Step 5: Solve for x
    x = 360,305,335,218.78/553,702.20
  6. Step 6: Final answer
    x = 650,720.43

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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.