Home / 985,679.72-1,478,296.50-452,688.36

Finding the Fourth Proportional to 985,679.72, 1,478,296.50 and 452,688.36

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Solution

The fourth proportional to 985,679.72, 1,478,296.50 and 452,688.36 is: 678,930.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,679.72 : 1,478,296.50 = 452,688.36 : x
  2. Step 2: Convert to fraction form
    985,679.72/1,478,296.50 = 452,688.36/x
  3. Step 3: Cross multiply
    985,679.72x = 1,478,296.50 × 452,688.36
  4. Step 4: Simplify right side
    985,679.72x = 669,207,618,178.74
  5. Step 5: Solve for x
    x = 669,207,618,178.74/985,679.72
  6. Step 6: Final answer
    x = 678,930.09

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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.