Home / 678,834.10-1,017,376.35-520,276.60

Finding the Fourth Proportional to 678,834.10, 1,017,376.35 and 520,276.60

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Solution

The fourth proportional to 678,834.10, 1,017,376.35 and 520,276.60 is: 779,744.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,834.10 : 1,017,376.35 = 520,276.60 : x
  2. Step 2: Convert to fraction form
    678,834.10/1,017,376.35 = 520,276.60/x
  3. Step 3: Cross multiply
    678,834.10x = 1,017,376.35 × 520,276.60
  4. Step 4: Simplify right side
    678,834.10x = 529,317,108,298.41
  5. Step 5: Solve for x
    x = 529,317,108,298.41/678,834.10
  6. Step 6: Final answer
    x = 779,744.43

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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.