Home / 427,306,710.40-640,960,065.60-298,060,259.20

Finding the Fourth Proportional to 427,306,710.40, 640,960,065.60 and 298,060,259.20

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Solution

The fourth proportional to 427,306,710.40, 640,960,065.60 and 298,060,259.20 is: 447,090,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,306,710.40 : 640,960,065.60 = 298,060,259.20 : x
  2. Step 2: Convert to fraction form
    427,306,710.40/640,960,065.60 = 298,060,259.20/x
  3. Step 3: Cross multiply
    427,306,710.40x = 640,960,065.60 × 298,060,259.20
  4. Step 4: Simplify right side
    427,306,710.40x = 191,044,723,289,584,992
  5. Step 5: Solve for x
    x = 191,044,723,289,584,992/427,306,710.40
  6. Step 6: Final answer
    x = 447,090,388.80

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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.