Home / 485,683,622.40-728,273,491.20-178,817,779.20

Finding the Fourth Proportional to 485,683,622.40, 728,273,491.20 and 178,817,779.20

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Solution

The fourth proportional to 485,683,622.40, 728,273,491.20 and 178,817,779.20 is: 268,133,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,683,622.40 : 728,273,491.20 = 178,817,779.20 : x
  2. Step 2: Convert to fraction form
    485,683,622.40/728,273,491.20 = 178,817,779.20/x
  3. Step 3: Cross multiply
    485,683,622.40x = 728,273,491.20 × 178,817,779.20
  4. Step 4: Simplify right side
    485,683,622.40x = 130,228,248,346,614,736
  5. Step 5: Solve for x
    x = 130,228,248,346,614,736/485,683,622.40
  6. Step 6: Final answer
    x = 268,133,909.28

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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.