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Finding the Fourth Proportional to 566,328.06, 781,532.28 and 311,679.45

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Solution

The fourth proportional to 566,328.06, 781,532.28 and 311,679.45 is: 430,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,328.06 : 781,532.28 = 311,679.45 : x
  2. Step 2: Convert to fraction form
    566,328.06/781,532.28 = 311,679.45/x
  3. Step 3: Cross multiply
    566,328.06x = 781,532.28 × 311,679.45
  4. Step 4: Simplify right side
    566,328.06x = 243,587,551,187.65
  5. Step 5: Solve for x
    x = 243,587,551,187.65/566,328.06
  6. Step 6: Final answer
    x = 430,117.40

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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.