Home / 740,331.88-1,021,658.42-400,800.28

Finding the Fourth Proportional to 740,331.88, 1,021,658.42 and 400,800.28

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Solution

The fourth proportional to 740,331.88, 1,021,658.42 and 400,800.28 is: 553,104.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,331.88 : 1,021,658.42 = 400,800.28 : x
  2. Step 2: Convert to fraction form
    740,331.88/1,021,658.42 = 400,800.28/x
  3. Step 3: Cross multiply
    740,331.88x = 1,021,658.42 × 400,800.28
  4. Step 4: Simplify right side
    740,331.88x = 409,480,980,800.36
  5. Step 5: Solve for x
    x = 409,480,980,800.36/740,331.88
  6. Step 6: Final answer
    x = 553,104.62

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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.