Home / 859,554.60-1,289,331.90-434,401.80

Finding the Fourth Proportional to 859,554.60, 1,289,331.90 and 434,401.80

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Solution

The fourth proportional to 859,554.60, 1,289,331.90 and 434,401.80 is: 651,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,554.60 : 1,289,331.90 = 434,401.80 : x
  2. Step 2: Convert to fraction form
    859,554.60/1,289,331.90 = 434,401.80/x
  3. Step 3: Cross multiply
    859,554.60x = 1,289,331.90 × 434,401.80
  4. Step 4: Simplify right side
    859,554.60x = 560,088,098,157.42
  5. Step 5: Solve for x
    x = 560,088,098,157.42/859,554.60
  6. Step 6: Final answer
    x = 651,602.70

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Double scale
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Similar ratio
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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.