Home / 686,428.41-946,709.55-483,152.25

Finding the Fourth Proportional to 686,428.41, 946,709.55 and 483,152.25

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Solution

The fourth proportional to 686,428.41, 946,709.55 and 483,152.25 is: 666,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,428.41 : 946,709.55 = 483,152.25 : x
  2. Step 2: Convert to fraction form
    686,428.41/946,709.55 = 483,152.25/x
  3. Step 3: Cross multiply
    686,428.41x = 946,709.55 × 483,152.25
  4. Step 4: Simplify right side
    686,428.41x = 457,404,849,178.99
  5. Step 5: Solve for x
    x = 457,404,849,178.99/686,428.41
  6. Step 6: Final answer
    x = 666,354.78

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.