Home / 731,496,621.70-1,009,467,980.76-396,969,071.50

Finding the Fourth Proportional to 731,496,621.70, 1,009,467,980.76 and 396,969,071.50

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Solution

The fourth proportional to 731,496,621.70, 1,009,467,980.76 and 396,969,071.50 is: 547,818,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,496,621.70 : 1,009,467,980.76 = 396,969,071.50 : x
  2. Step 2: Convert to fraction form
    731,496,621.70/1,009,467,980.76 = 396,969,071.50/x
  3. Step 3: Cross multiply
    731,496,621.70x = 1,009,467,980.76 × 396,969,071.50
  4. Step 4: Simplify right side
    731,496,621.70x = 400,727,567,031,277,056
  5. Step 5: Solve for x
    x = 400,727,567,031,277,056/731,496,621.70
  6. Step 6: Final answer
    x = 547,818,752.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.