Home / 518,631,740.30-715,713,957.95-280,476,924.72

Finding the Fourth Proportional to 518,631,740.30, 715,713,957.95 and 280,476,924.72

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Solution

The fourth proportional to 518,631,740.30, 715,713,957.95 and 280,476,924.72 is: 387,059,322.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,631,740.30 : 715,713,957.95 = 280,476,924.72 : x
  2. Step 2: Convert to fraction form
    518,631,740.30/715,713,957.95 = 280,476,924.72/x
  3. Step 3: Cross multiply
    518,631,740.30x = 715,713,957.95 × 280,476,924.72
  4. Step 4: Simplify right side
    518,631,740.30x = 200,741,249,905,901,152
  5. Step 5: Solve for x
    x = 200,741,249,905,901,152/518,631,740.30
  6. Step 6: Final answer
    x = 387,059,322.27

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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.