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Finding the Fourth Proportional to 655,666.80, 983,500.20 and 456,212.40

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Solution

The fourth proportional to 655,666.80, 983,500.20 and 456,212.40 is: 684,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,666.80 : 983,500.20 = 456,212.40 : x
  2. Step 2: Convert to fraction form
    655,666.80/983,500.20 = 456,212.40/x
  3. Step 3: Cross multiply
    655,666.80x = 983,500.20 × 456,212.40
  4. Step 4: Simplify right side
    655,666.80x = 448,684,986,642.48
  5. Step 5: Solve for x
    x = 448,684,986,642.48/655,666.80
  6. Step 6: Final answer
    x = 684,318.60

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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.