Home / 678,606.20-1,017,909.30-620,545.40

Finding the Fourth Proportional to 678,606.20, 1,017,909.30 and 620,545.40

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Solution

The fourth proportional to 678,606.20, 1,017,909.30 and 620,545.40 is: 930,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,606.20 : 1,017,909.30 = 620,545.40 : x
  2. Step 2: Convert to fraction form
    678,606.20/1,017,909.30 = 620,545.40/x
  3. Step 3: Cross multiply
    678,606.20x = 1,017,909.30 × 620,545.40
  4. Step 4: Simplify right side
    678,606.20x = 631,658,933,732.22
  5. Step 5: Solve for x
    x = 631,658,933,732.22/678,606.20
  6. Step 6: Final answer
    x = 930,818.10

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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.