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Finding the Fourth Proportional to 528,079.10, 789,814.65 and 472,322.30

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Solution

The fourth proportional to 528,079.10, 789,814.65 and 472,322.30 is: 706,422.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,079.10 : 789,814.65 = 472,322.30 : x
  2. Step 2: Convert to fraction form
    528,079.10/789,814.65 = 472,322.30/x
  3. Step 3: Cross multiply
    528,079.10x = 789,814.65 × 472,322.30
  4. Step 4: Simplify right side
    528,079.10x = 373,047,072,061.70
  5. Step 5: Solve for x
    x = 373,047,072,061.70/528,079.10
  6. Step 6: Final answer
    x = 706,422.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.