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Finding the Fourth Proportional to 706,901.40, 975,494.79 and 384,612.78

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Solution

The fourth proportional to 706,901.40, 975,494.79 and 384,612.78 is: 530,749.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,901.40 : 975,494.79 = 384,612.78 : x
  2. Step 2: Convert to fraction form
    706,901.40/975,494.79 = 384,612.78/x
  3. Step 3: Cross multiply
    706,901.40x = 975,494.79 × 384,612.78
  4. Step 4: Simplify right side
    706,901.40x = 375,187,763,057.42
  5. Step 5: Solve for x
    x = 375,187,763,057.42/706,901.40
  6. Step 6: Final answer
    x = 530,749.78

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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.