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Finding the Fourth Proportional to 807,124.80, 1,210,168.80 and 333,998.40

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Solution

The fourth proportional to 807,124.80, 1,210,168.80 and 333,998.40 is: 500,783.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,124.80 : 1,210,168.80 = 333,998.40 : x
  2. Step 2: Convert to fraction form
    807,124.80/1,210,168.80 = 333,998.40/x
  3. Step 3: Cross multiply
    807,124.80x = 1,210,168.80 × 333,998.40
  4. Step 4: Simplify right side
    807,124.80x = 404,194,442,929.92
  5. Step 5: Solve for x
    x = 404,194,442,929.92/807,124.80
  6. Step 6: Final answer
    x = 500,783.08

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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.