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Finding the Fourth Proportional to 572,290.32, 859,278.16 and 320,064.98

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Solution

The fourth proportional to 572,290.32, 859,278.16 and 320,064.98 is: 480,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,290.32 : 859,278.16 = 320,064.98 : x
  2. Step 2: Convert to fraction form
    572,290.32/859,278.16 = 320,064.98/x
  3. Step 3: Cross multiply
    572,290.32x = 859,278.16 × 320,064.98
  4. Step 4: Simplify right side
    572,290.32x = 275,024,847,094.84
  5. Step 5: Solve for x
    x = 275,024,847,094.84/572,290.32
  6. Step 6: Final answer
    x = 480,568.76

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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.