Home / 459,032.80-688,549.20-317,315.20

Finding the Fourth Proportional to 459,032.80, 688,549.20 and 317,315.20

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Solution

The fourth proportional to 459,032.80, 688,549.20 and 317,315.20 is: 475,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,032.80 : 688,549.20 = 317,315.20 : x
  2. Step 2: Convert to fraction form
    459,032.80/688,549.20 = 317,315.20/x
  3. Step 3: Cross multiply
    459,032.80x = 688,549.20 × 317,315.20
  4. Step 4: Simplify right side
    459,032.80x = 218,487,127,107.84
  5. Step 5: Solve for x
    x = 218,487,127,107.84/459,032.80
  6. Step 6: Final answer
    x = 475,972.80

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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.