Home / 812,992,348.50-1,216,850,125.92-438,980,303.04

Finding the Fourth Proportional to 812,992,348.50, 1,216,850,125.92 and 438,980,303.04

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Solution

The fourth proportional to 812,992,348.50, 1,216,850,125.92 and 438,980,303.04 is: 657,045,835.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,992,348.50 : 1,216,850,125.92 = 438,980,303.04 : x
  2. Step 2: Convert to fraction form
    812,992,348.50/1,216,850,125.92 = 438,980,303.04/x
  3. Step 3: Cross multiply
    812,992,348.50x = 1,216,850,125.92 × 438,980,303.04
  4. Step 4: Simplify right side
    812,992,348.50x = 534,173,237,030,623,808
  5. Step 5: Solve for x
    x = 534,173,237,030,623,808/812,992,348.50
  6. Step 6: Final answer
    x = 657,045,835.69

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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.