Home / 920,599,305.12-1,381,443,752.88-338,742,142.56

Finding the Fourth Proportional to 920,599,305.12, 1,381,443,752.88 and 338,742,142.56

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Solution

The fourth proportional to 920,599,305.12, 1,381,443,752.88 and 338,742,142.56 is: 508,313,675.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,599,305.12 : 1,381,443,752.88 = 338,742,142.56 : x
  2. Step 2: Convert to fraction form
    920,599,305.12/1,381,443,752.88 = 338,742,142.56/x
  3. Step 3: Cross multiply
    920,599,305.12x = 1,381,443,752.88 × 338,742,142.56
  4. Step 4: Simplify right side
    920,599,305.12x = 467,953,216,676,698,432
  5. Step 5: Solve for x
    x = 467,953,216,676,698,432/920,599,305.12
  6. Step 6: Final answer
    x = 508,313,675.75

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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.