Home / 876,702,592-1,209,834,750.72-485,553,617.92

Finding the Fourth Proportional to 876,702,592, 1,209,834,750.72 and 485,553,617.92

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Solution

The fourth proportional to 876,702,592, 1,209,834,750.72 and 485,553,617.92 is: 670,055,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,702,592 : 1,209,834,750.72 = 485,553,617.92 : x
  2. Step 2: Convert to fraction form
    876,702,592/1,209,834,750.72 = 485,553,617.92/x
  3. Step 3: Cross multiply
    876,702,592x = 1,209,834,750.72 × 485,553,617.92
  4. Step 4: Simplify right side
    876,702,592x = 587,439,640,297,437,312
  5. Step 5: Solve for x
    x = 587,439,640,297,437,312/876,702,592
  6. Step 6: Final answer
    x = 670,055,781.35

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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.