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Finding the Fourth Proportional to 459,206.40, 688,809.60 and 354,230.40

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Solution

The fourth proportional to 459,206.40, 688,809.60 and 354,230.40 is: 531,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,206.40 : 688,809.60 = 354,230.40 : x
  2. Step 2: Convert to fraction form
    459,206.40/688,809.60 = 354,230.40/x
  3. Step 3: Cross multiply
    459,206.40x = 688,809.60 × 354,230.40
  4. Step 4: Simplify right side
    459,206.40x = 243,997,300,131.84
  5. Step 5: Solve for x
    x = 243,997,300,131.84/459,206.40
  6. Step 6: Final answer
    x = 531,345.60

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Similar ratio
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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.