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Finding the Fourth Proportional to 578,423.84, 866,505.80 and 398,477.48

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Solution

The fourth proportional to 578,423.84, 866,505.80 and 398,477.48 is: 596,937.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,423.84 : 866,505.80 = 398,477.48 : x
  2. Step 2: Convert to fraction form
    578,423.84/866,505.80 = 398,477.48/x
  3. Step 3: Cross multiply
    578,423.84x = 866,505.80 × 398,477.48
  4. Step 4: Simplify right side
    578,423.84x = 345,283,044,253.05
  5. Step 5: Solve for x
    x = 345,283,044,253.05/578,423.84
  6. Step 6: Final answer
    x = 596,937.79

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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.