Home / 554,644.20-831,966.30-505,655.40

Finding the Fourth Proportional to 554,644.20, 831,966.30 and 505,655.40

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Solution

The fourth proportional to 554,644.20, 831,966.30 and 505,655.40 is: 758,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,644.20 : 831,966.30 = 505,655.40 : x
  2. Step 2: Convert to fraction form
    554,644.20/831,966.30 = 505,655.40/x
  3. Step 3: Cross multiply
    554,644.20x = 831,966.30 × 505,655.40
  4. Step 4: Simplify right side
    554,644.20x = 420,688,252,213.02
  5. Step 5: Solve for x
    x = 420,688,252,213.02/554,644.20
  6. Step 6: Final answer
    x = 758,483.10

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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.