Home / 769,711.68-1,154,154.96-385,400.16

Finding the Fourth Proportional to 769,711.68, 1,154,154.96 and 385,400.16

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Solution

The fourth proportional to 769,711.68, 1,154,154.96 and 385,400.16 is: 577,893.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,711.68 : 1,154,154.96 = 385,400.16 : x
  2. Step 2: Convert to fraction form
    769,711.68/1,154,154.96 = 385,400.16/x
  3. Step 3: Cross multiply
    769,711.68x = 1,154,154.96 × 385,400.16
  4. Step 4: Simplify right side
    769,711.68x = 444,811,506,248.79
  5. Step 5: Solve for x
    x = 444,811,506,248.79/769,711.68
  6. Step 6: Final answer
    x = 577,893.67

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Double scale
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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.