Home / 430,288,006.40-645,348,028.80-143,073,670.40

Finding the Fourth Proportional to 430,288,006.40, 645,348,028.80 and 143,073,670.40

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Solution

The fourth proportional to 430,288,006.40, 645,348,028.80 and 143,073,670.40 is: 214,582,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,288,006.40 : 645,348,028.80 = 143,073,670.40 : x
  2. Step 2: Convert to fraction form
    430,288,006.40/645,348,028.80 = 143,073,670.40/x
  3. Step 3: Cross multiply
    430,288,006.40x = 645,348,028.80 × 143,073,670.40
  4. Step 4: Simplify right side
    430,288,006.40x = 92,332,311,165,820,912
  5. Step 5: Solve for x
    x = 92,332,311,165,820,912/430,288,006.40
  6. Step 6: Final answer
    x = 214,582,581.42

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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.