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Finding the Fourth Proportional to 553,266.99, 763,500.94 and 311,552.46

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Solution

The fourth proportional to 553,266.99, 763,500.94 and 311,552.46 is: 429,938.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,266.99 : 763,500.94 = 311,552.46 : x
  2. Step 2: Convert to fraction form
    553,266.99/763,500.94 = 311,552.46/x
  3. Step 3: Cross multiply
    553,266.99x = 763,500.94 × 311,552.46
  4. Step 4: Simplify right side
    553,266.99x = 237,870,595,290.43
  5. Step 5: Solve for x
    x = 237,870,595,290.43/553,266.99
  6. Step 6: Final answer
    x = 429,938.17

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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.