Home / 522,008,985.40-720,386,052.72-283,868,097.78

Finding the Fourth Proportional to 522,008,985.40, 720,386,052.72 and 283,868,097.78

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Solution

The fourth proportional to 522,008,985.40, 720,386,052.72 and 283,868,097.78 is: 391,745,399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,008,985.40 : 720,386,052.72 = 283,868,097.78 : x
  2. Step 2: Convert to fraction form
    522,008,985.40/720,386,052.72 = 283,868,097.78/x
  3. Step 3: Cross multiply
    522,008,985.40x = 720,386,052.72 × 283,868,097.78
  4. Step 4: Simplify right side
    522,008,985.40x = 204,494,618,452,869,184
  5. Step 5: Solve for x
    x = 204,494,618,452,869,184/522,008,985.40
  6. Step 6: Final answer
    x = 391,745,399.36

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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.