Home / 646,812,000.30-970,218,000.45-258,442,790.70

Finding the Fourth Proportional to 646,812,000.30, 970,218,000.45 and 258,442,790.70

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Solution

The fourth proportional to 646,812,000.30, 970,218,000.45 and 258,442,790.70 is: 387,664,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,812,000.30 : 970,218,000.45 = 258,442,790.70 : x
  2. Step 2: Convert to fraction form
    646,812,000.30/970,218,000.45 = 258,442,790.70/x
  3. Step 3: Cross multiply
    646,812,000.30x = 970,218,000.45 × 258,442,790.70
  4. Step 4: Simplify right side
    646,812,000.30x = 250,745,847,623,671,872
  5. Step 5: Solve for x
    x = 250,745,847,623,671,872/646,812,000.30
  6. Step 6: Final answer
    x = 387,664,186.05

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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.