Home / 640,443,161.36-960,742,479.24-180,381,330.72

Finding the Fourth Proportional to 640,443,161.36, 960,742,479.24 and 180,381,330.72

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Solution

The fourth proportional to 640,443,161.36, 960,742,479.24 and 180,381,330.72 is: 270,593,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,443,161.36 : 960,742,479.24 = 180,381,330.72 : x
  2. Step 2: Convert to fraction form
    640,443,161.36/960,742,479.24 = 180,381,330.72/x
  3. Step 3: Cross multiply
    640,443,161.36x = 960,742,479.24 × 180,381,330.72
  4. Step 4: Simplify right side
    640,443,161.36x = 173,300,006,884,543,168
  5. Step 5: Solve for x
    x = 173,300,006,884,543,168/640,443,161.36
  6. Step 6: Final answer
    x = 270,593,890.82

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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.