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Finding the Fourth Proportional to 578,809.68, 866,814.72 and 500,427.60

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Solution

The fourth proportional to 578,809.68, 866,814.72 and 500,427.60 is: 749,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,809.68 : 866,814.72 = 500,427.60 : x
  2. Step 2: Convert to fraction form
    578,809.68/866,814.72 = 500,427.60/x
  3. Step 3: Cross multiply
    578,809.68x = 866,814.72 × 500,427.60
  4. Step 4: Simplify right side
    578,809.68x = 433,778,009,974.27
  5. Step 5: Solve for x
    x = 433,778,009,974.27/578,809.68
  6. Step 6: Final answer
    x = 749,431.16

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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.