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Finding the Fourth Proportional to 561,449.04, 774,801.71 and 306,800.25

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Solution

The fourth proportional to 561,449.04, 774,801.71 and 306,800.25 is: 423,385.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,449.04 : 774,801.71 = 306,800.25 : x
  2. Step 2: Convert to fraction form
    561,449.04/774,801.71 = 306,800.25/x
  3. Step 3: Cross multiply
    561,449.04x = 774,801.71 × 306,800.25
  4. Step 4: Simplify right side
    561,449.04x = 237,709,352,920.42
  5. Step 5: Solve for x
    x = 237,709,352,920.42/561,449.04
  6. Step 6: Final answer
    x = 423,385.45

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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.