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Finding the Fourth Proportional to 977,896.80, 1,465,678.80 and 409,276.80

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Solution

The fourth proportional to 977,896.80, 1,465,678.80 and 409,276.80 is: 613,427.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,896.80 : 1,465,678.80 = 409,276.80 : x
  2. Step 2: Convert to fraction form
    977,896.80/1,465,678.80 = 409,276.80/x
  3. Step 3: Cross multiply
    977,896.80x = 1,465,678.80 × 409,276.80
  4. Step 4: Simplify right side
    977,896.80x = 599,868,329,091.84
  5. Step 5: Solve for x
    x = 599,868,329,091.84/977,896.80
  6. Step 6: Final answer
    x = 613,427.03

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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.