Home / 719,830.12-993,367.14-397,534.28

Finding the Fourth Proportional to 719,830.12, 993,367.14 and 397,534.28

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Solution

The fourth proportional to 719,830.12, 993,367.14 and 397,534.28 is: 548,598.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,830.12 : 993,367.14 = 397,534.28 : x
  2. Step 2: Convert to fraction form
    719,830.12/993,367.14 = 397,534.28/x
  3. Step 3: Cross multiply
    719,830.12x = 993,367.14 × 397,534.28
  4. Step 4: Simplify right side
    719,830.12x = 394,897,490,775.56
  5. Step 5: Solve for x
    x = 394,897,490,775.56/719,830.12
  6. Step 6: Final answer
    x = 548,598.18

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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.