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Finding the Fourth Proportional to 459,652,203.20, 689,478,304.80 and 287,323,601.60

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Solution

The fourth proportional to 459,652,203.20, 689,478,304.80 and 287,323,601.60 is: 430,985,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,652,203.20 : 689,478,304.80 = 287,323,601.60 : x
  2. Step 2: Convert to fraction form
    459,652,203.20/689,478,304.80 = 287,323,601.60/x
  3. Step 3: Cross multiply
    459,652,203.20x = 689,478,304.80 × 287,323,601.60
  4. Step 4: Simplify right side
    459,652,203.20x = 198,103,389,760,198,560
  5. Step 5: Solve for x
    x = 198,103,389,760,198,560/459,652,203.20
  6. Step 6: Final answer
    x = 430,985,402.40

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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.