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Finding the Fourth Proportional to 661,627,904.90, 992,441,857.35 and 651,424,237.70

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Solution

The fourth proportional to 661,627,904.90, 992,441,857.35 and 651,424,237.70 is: 977,136,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,627,904.90 : 992,441,857.35 = 651,424,237.70 : x
  2. Step 2: Convert to fraction form
    661,627,904.90/992,441,857.35 = 651,424,237.70/x
  3. Step 3: Cross multiply
    661,627,904.90x = 992,441,857.35 × 651,424,237.70
  4. Step 4: Simplify right side
    661,627,904.90x = 646,500,680,385,795,968
  5. Step 5: Solve for x
    x = 646,500,680,385,795,968/661,627,904.90
  6. Step 6: Final answer
    x = 977,136,356.55

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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.