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Finding the Fourth Proportional to 566,325.81, 781,547.35 and 321,320.90

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Solution

The fourth proportional to 566,325.81, 781,547.35 and 321,320.90 is: 443,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,325.81 : 781,547.35 = 321,320.90 : x
  2. Step 2: Convert to fraction form
    566,325.81/781,547.35 = 321,320.90/x
  3. Step 3: Cross multiply
    566,325.81x = 781,547.35 × 321,320.90
  4. Step 4: Simplify right side
    566,325.81x = 251,127,496,093.98
  5. Step 5: Solve for x
    x = 251,127,496,093.98/566,325.81
  6. Step 6: Final answer
    x = 443,432.90

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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.