Home / 688,719.40-1,033,079.10-644,104.60

Finding the Fourth Proportional to 688,719.40, 1,033,079.10 and 644,104.60

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Solution

The fourth proportional to 688,719.40, 1,033,079.10 and 644,104.60 is: 966,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,719.40 : 1,033,079.10 = 644,104.60 : x
  2. Step 2: Convert to fraction form
    688,719.40/1,033,079.10 = 644,104.60/x
  3. Step 3: Cross multiply
    688,719.40x = 1,033,079.10 × 644,104.60
  4. Step 4: Simplify right side
    688,719.40x = 665,411,000,473.86
  5. Step 5: Solve for x
    x = 665,411,000,473.86/688,719.40
  6. Step 6: Final answer
    x = 966,156.90

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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.