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Finding the Fourth Proportional to 992,994.30, 1,490,107.05 and 520,019.10

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Solution

The fourth proportional to 992,994.30, 1,490,107.05 and 520,019.10 is: 780,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,994.30 : 1,490,107.05 = 520,019.10 : x
  2. Step 2: Convert to fraction form
    992,994.30/1,490,107.05 = 520,019.10/x
  3. Step 3: Cross multiply
    992,994.30x = 1,490,107.05 × 520,019.10
  4. Step 4: Simplify right side
    992,994.30x = 774,884,127,044.66
  5. Step 5: Solve for x
    x = 774,884,127,044.66/992,994.30
  6. Step 6: Final answer
    x = 780,351.03

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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.