Home / 747,085,699.40-1,120,796,510.70-440,219,856.20

Finding the Fourth Proportional to 747,085,699.40, 1,120,796,510.70 and 440,219,856.20

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Solution

The fourth proportional to 747,085,699.40, 1,120,796,510.70 and 440,219,856.20 is: 660,428,755.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,085,699.40 : 1,120,796,510.70 = 440,219,856.20 : x
  2. Step 2: Convert to fraction form
    747,085,699.40/1,120,796,510.70 = 440,219,856.20/x
  3. Step 3: Cross multiply
    747,085,699.40x = 1,120,796,510.70 × 440,219,856.20
  4. Step 4: Simplify right side
    747,085,699.40x = 493,396,878,769,815,744
  5. Step 5: Solve for x
    x = 493,396,878,769,815,744/747,085,699.40
  6. Step 6: Final answer
    x = 660,428,755.58

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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.