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Finding the Fourth Proportional to 690,393.77, 952,740.38 and 384,473.78

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Solution

The fourth proportional to 690,393.77, 952,740.38 and 384,473.78 is: 530,572.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,393.77 : 952,740.38 = 384,473.78 : x
  2. Step 2: Convert to fraction form
    690,393.77/952,740.38 = 384,473.78/x
  3. Step 3: Cross multiply
    690,393.77x = 952,740.38 × 384,473.78
  4. Step 4: Simplify right side
    690,393.77x = 366,303,688,571.17
  5. Step 5: Solve for x
    x = 366,303,688,571.17/690,393.77
  6. Step 6: Final answer
    x = 530,572.13

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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.