Home / 628,439.69-867,095.61-370,327.21

Finding the Fourth Proportional to 628,439.69, 867,095.61 and 370,327.21

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Solution

The fourth proportional to 628,439.69, 867,095.61 and 370,327.21 is: 510,962.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,439.69 : 867,095.61 = 370,327.21 : x
  2. Step 2: Convert to fraction form
    628,439.69/867,095.61 = 370,327.21/x
  3. Step 3: Cross multiply
    628,439.69x = 867,095.61 × 370,327.21
  4. Step 4: Simplify right side
    628,439.69x = 321,109,094,498.08
  5. Step 5: Solve for x
    x = 321,109,094,498.08/628,439.69
  6. Step 6: Final answer
    x = 510,962.47

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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.