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Finding the Fourth Proportional to 977,948,803.62, 1,349,446,858.56 and 661,098,453.71

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Solution

The fourth proportional to 977,948,803.62, 1,349,446,858.56 and 661,098,453.71 is: 912,233,061.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,948,803.62 : 1,349,446,858.56 = 661,098,453.71 : x
  2. Step 2: Convert to fraction form
    977,948,803.62/1,349,446,858.56 = 661,098,453.71/x
  3. Step 3: Cross multiply
    977,948,803.62x = 1,349,446,858.56 × 661,098,453.71
  4. Step 4: Simplify right side
    977,948,803.62x = 892,117,231,551,085,824
  5. Step 5: Solve for x
    x = 892,117,231,551,085,824/977,948,803.62
  6. Step 6: Final answer
    x = 912,233,061.94

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.