Home / 919,378,925.20-1,379,740,234.20-647,281,133.20

Finding the Fourth Proportional to 919,378,925.20, 1,379,740,234.20 and 647,281,133.20

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Solution

The fourth proportional to 919,378,925.20, 1,379,740,234.20 and 647,281,133.20 is: 971,394,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,378,925.20 : 1,379,740,234.20 = 647,281,133.20 : x
  2. Step 2: Convert to fraction form
    919,378,925.20/1,379,740,234.20 = 647,281,133.20/x
  3. Step 3: Cross multiply
    919,378,925.20x = 1,379,740,234.20 × 647,281,133.20
  4. Step 4: Simplify right side
    919,378,925.20x = 893,079,822,314,609,536
  5. Step 5: Solve for x
    x = 893,079,822,314,609,536/919,378,925.20
  6. Step 6: Final answer
    x = 971,394,707.70

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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.