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Finding the Fourth Proportional to 688,492.80, 950,066.88 and 386,628.48

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Solution

The fourth proportional to 688,492.80, 950,066.88 and 386,628.48 is: 533,517.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,492.80 : 950,066.88 = 386,628.48 : x
  2. Step 2: Convert to fraction form
    688,492.80/950,066.88 = 386,628.48/x
  3. Step 3: Cross multiply
    688,492.80x = 950,066.88 × 386,628.48
  4. Step 4: Simplify right side
    688,492.80x = 367,322,913,712.74
  5. Step 5: Solve for x
    x = 367,322,913,712.74/688,492.80
  6. Step 6: Final answer
    x = 533,517.44

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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.