Home / 686,384.18-947,099.94-431,554.94

Finding the Fourth Proportional to 686,384.18, 947,099.94 and 431,554.94

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Solution

The fourth proportional to 686,384.18, 947,099.94 and 431,554.94 is: 595,476.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,384.18 : 947,099.94 = 431,554.94 : x
  2. Step 2: Convert to fraction form
    686,384.18/947,099.94 = 431,554.94/x
  3. Step 3: Cross multiply
    686,384.18x = 947,099.94 × 431,554.94
  4. Step 4: Simplify right side
    686,384.18x = 408,725,657,405.99
  5. Step 5: Solve for x
    x = 408,725,657,405.99/686,384.18
  6. Step 6: Final answer
    x = 595,476.51

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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.