Home / 639,604,911.40-960,124,812.45-494,680,950.70

Finding the Fourth Proportional to 639,604,911.40, 960,124,812.45 and 494,680,950.70

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Solution

The fourth proportional to 639,604,911.40, 960,124,812.45 and 494,680,950.70 is: 742,576,310.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,604,911.40 : 960,124,812.45 = 494,680,950.70 : x
  2. Step 2: Convert to fraction form
    639,604,911.40/960,124,812.45 = 494,680,950.70/x
  3. Step 3: Cross multiply
    639,604,911.40x = 960,124,812.45 × 494,680,950.70
  4. Step 4: Simplify right side
    639,604,911.40x = 474,955,455,013,425,216
  5. Step 5: Solve for x
    x = 474,955,455,013,425,216/639,604,911.40
  6. Step 6: Final answer
    x = 742,576,310.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.