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Finding the Fourth Proportional to 528,045.10, 790,318.05 and 486,054.70

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Solution

The fourth proportional to 528,045.10, 790,318.05 and 486,054.70 is: 727,471.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,045.10 : 790,318.05 = 486,054.70 : x
  2. Step 2: Convert to fraction form
    528,045.10/790,318.05 = 486,054.70/x
  3. Step 3: Cross multiply
    528,045.10x = 790,318.05 × 486,054.70
  4. Step 4: Simplify right side
    528,045.10x = 384,137,802,697.34
  5. Step 5: Solve for x
    x = 384,137,802,697.34/528,045.10
  6. Step 6: Final answer
    x = 727,471.58

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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.