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Finding the Fourth Proportional to 614,197.40, 921,879.30 and 378,001.40

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Solution

The fourth proportional to 614,197.40, 921,879.30 and 378,001.40 is: 567,361.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,197.40 : 921,879.30 = 378,001.40 : x
  2. Step 2: Convert to fraction form
    614,197.40/921,879.30 = 378,001.40/x
  3. Step 3: Cross multiply
    614,197.40x = 921,879.30 × 378,001.40
  4. Step 4: Simplify right side
    614,197.40x = 348,471,666,031.02
  5. Step 5: Solve for x
    x = 348,471,666,031.02/614,197.40
  6. Step 6: Final answer
    x = 567,361.02

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1.5x scale

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.