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Finding the Fourth Proportional to 561,072.60, 774,281.04 and 319,355.17

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Solution

The fourth proportional to 561,072.60, 774,281.04 and 319,355.17 is: 440,710.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,072.60 : 774,281.04 = 319,355.17 : x
  2. Step 2: Convert to fraction form
    561,072.60/774,281.04 = 319,355.17/x
  3. Step 3: Cross multiply
    561,072.60x = 774,281.04 × 319,355.17
  4. Step 4: Simplify right side
    561,072.60x = 247,270,653,582.53
  5. Step 5: Solve for x
    x = 247,270,653,582.53/561,072.60
  6. Step 6: Final answer
    x = 440,710.62

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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.