Home / 689,855,288.40-1,034,782,932.60-626,365,803.60

Finding the Fourth Proportional to 689,855,288.40, 1,034,782,932.60 and 626,365,803.60

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Solution

The fourth proportional to 689,855,288.40, 1,034,782,932.60 and 626,365,803.60 is: 939,548,705.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,855,288.40 : 1,034,782,932.60 = 626,365,803.60 : x
  2. Step 2: Convert to fraction form
    689,855,288.40/1,034,782,932.60 = 626,365,803.60/x
  3. Step 3: Cross multiply
    689,855,288.40x = 1,034,782,932.60 × 626,365,803.60
  4. Step 4: Simplify right side
    689,855,288.40x = 648,152,643,129,563,648
  5. Step 5: Solve for x
    x = 648,152,643,129,563,648/689,855,288.40
  6. Step 6: Final answer
    x = 939,548,705.40

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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.