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Finding the Fourth Proportional to 518,669.84, 778,004.88 and 163,711.52

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Solution

The fourth proportional to 518,669.84, 778,004.88 and 163,711.52 is: 245,567.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,669.84 : 778,004.88 = 163,711.52 : x
  2. Step 2: Convert to fraction form
    518,669.84/778,004.88 = 163,711.52/x
  3. Step 3: Cross multiply
    518,669.84x = 778,004.88 × 163,711.52
  4. Step 4: Simplify right side
    518,669.84x = 127,368,361,472.22
  5. Step 5: Solve for x
    x = 127,368,361,472.22/518,669.84
  6. Step 6: Final answer
    x = 245,567.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.