Home / 442,490,717.80-663,169,206.30-393,739,863.40

Finding the Fourth Proportional to 442,490,717.80, 663,169,206.30 and 393,739,863.40

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Solution

The fourth proportional to 442,490,717.80, 663,169,206.30 and 393,739,863.40 is: 590,105,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,490,717.80 : 663,169,206.30 = 393,739,863.40 : x
  2. Step 2: Convert to fraction form
    442,490,717.80/663,169,206.30 = 393,739,863.40/x
  3. Step 3: Cross multiply
    442,490,717.80x = 663,169,206.30 × 393,739,863.40
  4. Step 4: Simplify right side
    442,490,717.80x = 261,116,152,699,648,384
  5. Step 5: Solve for x
    x = 261,116,152,699,648,384/442,490,717.80
  6. Step 6: Final answer
    x = 590,105,378.93

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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.