Home / 890,389.61-1,228,769.03-508,409.45

Finding the Fourth Proportional to 890,389.61, 1,228,769.03 and 508,409.45

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Solution

The fourth proportional to 890,389.61, 1,228,769.03 and 508,409.45 is: 701,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,389.61 : 1,228,769.03 = 508,409.45 : x
  2. Step 2: Convert to fraction form
    890,389.61/1,228,769.03 = 508,409.45/x
  3. Step 3: Cross multiply
    890,389.61x = 1,228,769.03 × 508,409.45
  4. Step 4: Simplify right side
    890,389.61x = 624,717,786,719.33
  5. Step 5: Solve for x
    x = 624,717,786,719.33/890,389.61
  6. Step 6: Final answer
    x = 701,622.95

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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.