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Finding the Fourth Proportional to 575,165.60, 793,729.32 and 320,511.20

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Solution

The fourth proportional to 575,165.60, 793,729.32 and 320,511.20 is: 442,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,165.60 : 793,729.32 = 320,511.20 : x
  2. Step 2: Convert to fraction form
    575,165.60/793,729.32 = 320,511.20/x
  3. Step 3: Cross multiply
    575,165.60x = 793,729.32 × 320,511.20
  4. Step 4: Simplify right side
    575,165.60x = 254,399,136,828.38
  5. Step 5: Solve for x
    x = 254,399,136,828.38/575,165.60
  6. Step 6: Final answer
    x = 442,305.90

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1.5x scale

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.