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Finding the Fourth Proportional to 459,259.70, 688,889.55 and 437,486.90

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Solution

The fourth proportional to 459,259.70, 688,889.55 and 437,486.90 is: 656,230.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,259.70 : 688,889.55 = 437,486.90 : x
  2. Step 2: Convert to fraction form
    459,259.70/688,889.55 = 437,486.90/x
  3. Step 3: Cross multiply
    459,259.70x = 688,889.55 × 437,486.90
  4. Step 4: Simplify right side
    459,259.70x = 301,380,153,671.90
  5. Step 5: Solve for x
    x = 301,380,153,671.90/459,259.70
  6. Step 6: Final answer
    x = 656,230.35

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Double scale
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Similar ratio
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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.