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Finding the Fourth Proportional to 690,603.84, 953,018.76 and 384,679.44

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Solution

The fourth proportional to 690,603.84, 953,018.76 and 384,679.44 is: 530,849.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,603.84 : 953,018.76 = 384,679.44 : x
  2. Step 2: Convert to fraction form
    690,603.84/953,018.76 = 384,679.44/x
  3. Step 3: Cross multiply
    690,603.84x = 953,018.76 × 384,679.44
  4. Step 4: Simplify right side
    690,603.84x = 366,606,722,906.29
  5. Step 5: Solve for x
    x = 366,606,722,906.29/690,603.84
  6. Step 6: Final answer
    x = 530,849.53

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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.