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Finding the Fourth Proportional to 562,321.80, 776,009.70 and 307,683.72

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Solution

The fourth proportional to 562,321.80, 776,009.70 and 307,683.72 is: 424,606.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,321.80 : 776,009.70 = 307,683.72 : x
  2. Step 2: Convert to fraction form
    562,321.80/776,009.70 = 307,683.72/x
  3. Step 3: Cross multiply
    562,321.80x = 776,009.70 × 307,683.72
  4. Step 4: Simplify right side
    562,321.80x = 238,765,551,252.08
  5. Step 5: Solve for x
    x = 238,765,551,252.08/562,321.80
  6. Step 6: Final answer
    x = 424,606.61

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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.