Home / 668,827,209.70-1,003,240,814.55-515,772,201.70

Finding the Fourth Proportional to 668,827,209.70, 1,003,240,814.55 and 515,772,201.70

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Solution

The fourth proportional to 668,827,209.70, 1,003,240,814.55 and 515,772,201.70 is: 773,658,302.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,827,209.70 : 1,003,240,814.55 = 515,772,201.70 : x
  2. Step 2: Convert to fraction form
    668,827,209.70/1,003,240,814.55 = 515,772,201.70/x
  3. Step 3: Cross multiply
    668,827,209.70x = 1,003,240,814.55 × 515,772,201.70
  4. Step 4: Simplify right side
    668,827,209.70x = 517,443,723,755,754,880
  5. Step 5: Solve for x
    x = 517,443,723,755,754,880/668,827,209.70
  6. Step 6: Final answer
    x = 773,658,302.55

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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.