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Finding the Fourth Proportional to 885,738,492.60, 1,328,607,738.90 and 656,155,980.60

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Solution

The fourth proportional to 885,738,492.60, 1,328,607,738.90 and 656,155,980.60 is: 984,233,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,738,492.60 : 1,328,607,738.90 = 656,155,980.60 : x
  2. Step 2: Convert to fraction form
    885,738,492.60/1,328,607,738.90 = 656,155,980.60/x
  3. Step 3: Cross multiply
    885,738,492.60x = 1,328,607,738.90 × 656,155,980.60
  4. Step 4: Simplify right side
    885,738,492.60x = 871,773,913,750,678,400
  5. Step 5: Solve for x
    x = 871,773,913,750,678,400/885,738,492.60
  6. Step 6: Final answer
    x = 984,233,970.90

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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.