Home / 421,187.45-581,510.21-375,786.71

Finding the Fourth Proportional to 421,187.45, 581,510.21 and 375,786.71

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Solution

The fourth proportional to 421,187.45, 581,510.21 and 375,786.71 is: 518,827.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,187.45 : 581,510.21 = 375,786.71 : x
  2. Step 2: Convert to fraction form
    421,187.45/581,510.21 = 375,786.71/x
  3. Step 3: Cross multiply
    421,187.45x = 581,510.21 × 375,786.71
  4. Step 4: Simplify right side
    421,187.45x = 218,523,806,041.49
  5. Step 5: Solve for x
    x = 218,523,806,041.49/421,187.45
  6. Step 6: Final answer
    x = 518,827.92

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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.