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Finding the Fourth Proportional to 512,439.40, 708,783.78 and 452,823.40

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Solution

The fourth proportional to 512,439.40, 708,783.78 and 452,823.40 is: 626,325.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,439.40 : 708,783.78 = 452,823.40 : x
  2. Step 2: Convert to fraction form
    512,439.40/708,783.78 = 452,823.40/x
  3. Step 3: Cross multiply
    512,439.40x = 708,783.78 × 452,823.40
  4. Step 4: Simplify right side
    512,439.40x = 320,953,881,124.45
  5. Step 5: Solve for x
    x = 320,953,881,124.45/512,439.40
  6. Step 6: Final answer
    x = 626,325.53

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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.