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Finding the Fourth Proportional to 1,986,508.96, 2,979,728.88 and 490,602.40

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Solution

The fourth proportional to 1,986,508.96, 2,979,728.88 and 490,602.40 is: 735,895.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,508.96 : 2,979,728.88 = 490,602.40 : x
  2. Step 2: Convert to fraction form
    1,986,508.96/2,979,728.88 = 490,602.40/x
  3. Step 3: Cross multiply
    1,986,508.96x = 2,979,728.88 × 490,602.40
  4. Step 4: Simplify right side
    1,986,508.96x = 1,461,862,139,877.31
  5. Step 5: Solve for x
    x = 1,461,862,139,877.31/1,986,508.96
  6. Step 6: Final answer
    x = 735,895.06

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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.