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Finding the Fourth Proportional to 578,637.94, 867,640.51 and 459,460.45

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Solution

The fourth proportional to 578,637.94, 867,640.51 and 459,460.45 is: 688,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,637.94 : 867,640.51 = 459,460.45 : x
  2. Step 2: Convert to fraction form
    578,637.94/867,640.51 = 459,460.45/x
  3. Step 3: Cross multiply
    578,637.94x = 867,640.51 × 459,460.45
  4. Step 4: Simplify right side
    578,637.94x = 398,646,492,527.33
  5. Step 5: Solve for x
    x = 398,646,492,527.33/578,637.94
  6. Step 6: Final answer
    x = 688,939.43

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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.