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Finding the Fourth Proportional to 688,692.75, 950,219.49 and 402,048.12

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Solution

The fourth proportional to 688,692.75, 950,219.49 and 402,048.12 is: 554,723.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,692.75 : 950,219.49 = 402,048.12 : x
  2. Step 2: Convert to fraction form
    688,692.75/950,219.49 = 402,048.12/x
  3. Step 3: Cross multiply
    688,692.75x = 950,219.49 × 402,048.12
  4. Step 4: Simplify right side
    688,692.75x = 382,033,959,541.86
  5. Step 5: Solve for x
    x = 382,033,959,541.86/688,692.75
  6. Step 6: Final answer
    x = 554,723.36

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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.