Home / 865,009,588.02-1,297,126,426.46-515,420,393.64

Finding the Fourth Proportional to 865,009,588.02, 1,297,126,426.46 and 515,420,393.64

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Solution

The fourth proportional to 865,009,588.02, 1,297,126,426.46 and 515,420,393.64 is: 772,899,425.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,009,588.02 : 1,297,126,426.46 = 515,420,393.64 : x
  2. Step 2: Convert to fraction form
    865,009,588.02/1,297,126,426.46 = 515,420,393.64/x
  3. Step 3: Cross multiply
    865,009,588.02x = 1,297,126,426.46 × 515,420,393.64
  4. Step 4: Simplify right side
    865,009,588.02x = 668,565,413,324,282,496
  5. Step 5: Solve for x
    x = 668,565,413,324,282,496/865,009,588.02
  6. Step 6: Final answer
    x = 772,899,425.14

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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.