Home / 647,085,401.20-970,628,101.80-440,461,140.40

Finding the Fourth Proportional to 647,085,401.20, 970,628,101.80 and 440,461,140.40

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Solution

The fourth proportional to 647,085,401.20, 970,628,101.80 and 440,461,140.40 is: 660,691,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,085,401.20 : 970,628,101.80 = 440,461,140.40 : x
  2. Step 2: Convert to fraction form
    647,085,401.20/970,628,101.80 = 440,461,140.40/x
  3. Step 3: Cross multiply
    647,085,401.20x = 970,628,101.80 × 440,461,140.40
  4. Step 4: Simplify right side
    647,085,401.20x = 427,523,960,623,115,264
  5. Step 5: Solve for x
    x = 427,523,960,623,115,264/647,085,401.20
  6. Step 6: Final answer
    x = 660,691,710.60

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Double scale
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Similar ratio
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1.5x scale

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.