Home / 521,631,320.97-719,867,422.49-286,677,711.93

Finding the Fourth Proportional to 521,631,320.97, 719,867,422.49 and 286,677,711.93

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Solution

The fourth proportional to 521,631,320.97, 719,867,422.49 and 286,677,711.93 is: 395,624,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,631,320.97 : 719,867,422.49 = 286,677,711.93 : x
  2. Step 2: Convert to fraction form
    521,631,320.97/719,867,422.49 = 286,677,711.93/x
  3. Step 3: Cross multiply
    521,631,320.97x = 719,867,422.49 × 286,677,711.93
  4. Step 4: Simplify right side
    521,631,320.97x = 206,369,945,570,946,432
  5. Step 5: Solve for x
    x = 206,369,945,570,946,432/521,631,320.97
  6. Step 6: Final answer
    x = 395,624,145.40

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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.