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Finding the Fourth Proportional to 529,809.46, 731,140.85 and 288,090.29

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Solution

The fourth proportional to 529,809.46, 731,140.85 and 288,090.29 is: 397,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,809.46 : 731,140.85 = 288,090.29 : x
  2. Step 2: Convert to fraction form
    529,809.46/731,140.85 = 288,090.29/x
  3. Step 3: Cross multiply
    529,809.46x = 731,140.85 × 288,090.29
  4. Step 4: Simplify right side
    529,809.46x = 210,634,582,055.42
  5. Step 5: Solve for x
    x = 210,634,582,055.42/529,809.46
  6. Step 6: Final answer
    x = 397,566.67

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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.