Home / 459,025.80-688,538.70-317,308.20

Finding the Fourth Proportional to 459,025.80, 688,538.70 and 317,308.20

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Solution

The fourth proportional to 459,025.80, 688,538.70 and 317,308.20 is: 475,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,025.80 : 688,538.70 = 317,308.20 : x
  2. Step 2: Convert to fraction form
    459,025.80/688,538.70 = 317,308.20/x
  3. Step 3: Cross multiply
    459,025.80x = 688,538.70 × 317,308.20
  4. Step 4: Simplify right side
    459,025.80x = 218,478,975,527.34
  5. Step 5: Solve for x
    x = 218,478,975,527.34/459,025.80
  6. Step 6: Final answer
    x = 475,962.30

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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.