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Finding the Fourth Proportional to 404,887.80, 607,331.70 and 310,409.40

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Solution

The fourth proportional to 404,887.80, 607,331.70 and 310,409.40 is: 465,614.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,887.80 : 607,331.70 = 310,409.40 : x
  2. Step 2: Convert to fraction form
    404,887.80/607,331.70 = 310,409.40/x
  3. Step 3: Cross multiply
    404,887.80x = 607,331.70 × 310,409.40
  4. Step 4: Simplify right side
    404,887.80x = 188,521,468,597.98
  5. Step 5: Solve for x
    x = 188,521,468,597.98/404,887.80
  6. Step 6: Final answer
    x = 465,614.10

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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.