Home / 928,430.94-1,392,660.98-422,971.50

Finding the Fourth Proportional to 928,430.94, 1,392,660.98 and 422,971.50

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Solution

The fourth proportional to 928,430.94, 1,392,660.98 and 422,971.50 is: 634,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,430.94 : 1,392,660.98 = 422,971.50 : x
  2. Step 2: Convert to fraction form
    928,430.94/1,392,660.98 = 422,971.50/x
  3. Step 3: Cross multiply
    928,430.94x = 1,392,660.98 × 422,971.50
  4. Step 4: Simplify right side
    928,430.94x = 589,055,898,429.65
  5. Step 5: Solve for x
    x = 589,055,898,429.65/928,430.94
  6. Step 6: Final answer
    x = 634,463.89

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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.