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Finding the Fourth Proportional to 561,403.68, 774,737.28 and 303,280.72

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Solution

The fourth proportional to 561,403.68, 774,737.28 and 303,280.72 is: 418,527.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,403.68 : 774,737.28 = 303,280.72 : x
  2. Step 2: Convert to fraction form
    561,403.68/774,737.28 = 303,280.72/x
  3. Step 3: Cross multiply
    561,403.68x = 774,737.28 × 303,280.72
  4. Step 4: Simplify right side
    561,403.68x = 234,962,880,089.24
  5. Step 5: Solve for x
    x = 234,962,880,089.24/561,403.68
  6. Step 6: Final answer
    x = 418,527.50

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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.