Home / 699,341.50-965,089.84-393,418.10

Finding the Fourth Proportional to 699,341.50, 965,089.84 and 393,418.10

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Solution

The fourth proportional to 699,341.50, 965,089.84 and 393,418.10 is: 542,916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,341.50 : 965,089.84 = 393,418.10 : x
  2. Step 2: Convert to fraction form
    699,341.50/965,089.84 = 393,418.10/x
  3. Step 3: Cross multiply
    699,341.50x = 965,089.84 × 393,418.10
  4. Step 4: Simplify right side
    699,341.50x = 379,683,808,769.38
  5. Step 5: Solve for x
    x = 379,683,808,769.38/699,341.50
  6. Step 6: Final answer
    x = 542,916.17

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.