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Finding the Fourth Proportional to 578,052.70, 867,079.05 and 459,079.90

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Solution

The fourth proportional to 578,052.70, 867,079.05 and 459,079.90 is: 688,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,052.70 : 867,079.05 = 459,079.90 : x
  2. Step 2: Convert to fraction form
    578,052.70/867,079.05 = 459,079.90/x
  3. Step 3: Cross multiply
    578,052.70x = 867,079.05 × 459,079.90
  4. Step 4: Simplify right side
    578,052.70x = 398,058,563,566.10
  5. Step 5: Solve for x
    x = 398,058,563,566.10/578,052.70
  6. Step 6: Final answer
    x = 688,619.85

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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.