Home / 386,688,297,844.78-533,605,807,041.21-213,063,721,088.61

Finding the Fourth Proportional to 386,688,297,844.78, 533,605,807,041.21 and 213,063,721,088.61

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Solution

The fourth proportional to 386,688,297,844.78, 533,605,807,041.21 and 213,063,721,088.61 is: 294,014,686,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,688,297,844.78 : 533,605,807,041.21 = 213,063,721,088.61 : x
  2. Step 2: Convert to fraction form
    386,688,297,844.78/533,605,807,041.21 = 213,063,721,088.61/x
  3. Step 3: Cross multiply
    386,688,297,844.78x = 533,605,807,041.21 × 213,063,721,088.61
  4. Step 4: Simplify right side
    386,688,297,844.78x = 113,692,038,842,691,014,885,376
  5. Step 5: Solve for x
    x = 113,692,038,842,691,014,885,376/386,688,297,844.78
  6. Step 6: Final answer
    x = 294,014,686,961.97

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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.