Home / 393,364,807.56-542,829,199.86-217,149,018.12

Finding the Fourth Proportional to 393,364,807.56, 542,829,199.86 and 217,149,018.12

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Solution

The fourth proportional to 393,364,807.56, 542,829,199.86 and 217,149,018.12 is: 299,657,787.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,364,807.56 : 542,829,199.86 = 217,149,018.12 : x
  2. Step 2: Convert to fraction form
    393,364,807.56/542,829,199.86 = 217,149,018.12/x
  3. Step 3: Cross multiply
    393,364,807.56x = 542,829,199.86 × 217,149,018.12
  4. Step 4: Simplify right side
    393,364,807.56x = 117,874,827,756,464,240
  5. Step 5: Solve for x
    x = 117,874,827,756,464,240/393,364,807.56
  6. Step 6: Final answer
    x = 299,657,787.10

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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.