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Finding the Fourth Proportional to 819,000.90, 1,225,548.90 and 553,280.40

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Solution

The fourth proportional to 819,000.90, 1,225,548.90 and 553,280.40 is: 827,926.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,000.90 : 1,225,548.90 = 553,280.40 : x
  2. Step 2: Convert to fraction form
    819,000.90/1,225,548.90 = 553,280.40/x
  3. Step 3: Cross multiply
    819,000.90x = 1,225,548.90 × 553,280.40
  4. Step 4: Simplify right side
    819,000.90x = 678,072,185,611.56
  5. Step 5: Solve for x
    x = 678,072,185,611.56/819,000.90
  6. Step 6: Final answer
    x = 827,926.06

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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.