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Finding the Fourth Proportional to 935,008.40, 1,399,013.40 and 620,080.40

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Solution

The fourth proportional to 935,008.40, 1,399,013.40 and 620,080.40 is: 927,799.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    935,008.40 : 1,399,013.40 = 620,080.40 : x
  2. Step 2: Convert to fraction form
    935,008.40/1,399,013.40 = 620,080.40/x
  3. Step 3: Cross multiply
    935,008.40x = 1,399,013.40 × 620,080.40
  4. Step 4: Simplify right side
    935,008.40x = 867,500,788,677.36
  5. Step 5: Solve for x
    x = 867,500,788,677.36/935,008.40
  6. Step 6: Final answer
    x = 927,799.99

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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.