Home / 378,432,000.80-567,648,001.20-105,802,330.40

Finding the Fourth Proportional to 378,432,000.80, 567,648,001.20 and 105,802,330.40

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Solution

The fourth proportional to 378,432,000.80, 567,648,001.20 and 105,802,330.40 is: 158,703,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,432,000.80 : 567,648,001.20 = 105,802,330.40 : x
  2. Step 2: Convert to fraction form
    378,432,000.80/567,648,001.20 = 105,802,330.40/x
  3. Step 3: Cross multiply
    378,432,000.80x = 567,648,001.20 × 105,802,330.40
  4. Step 4: Simplify right side
    378,432,000.80x = 60,058,481,373,862,008
  5. Step 5: Solve for x
    x = 60,058,481,373,862,008/378,432,000.80
  6. Step 6: Final answer
    x = 158,703,495.60

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1.5x scale

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.