Home / 869,807,492.37-1,200,334,517.19-478,666,916.37

Finding the Fourth Proportional to 869,807,492.37, 1,200,334,517.19 and 478,666,916.37

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Solution

The fourth proportional to 869,807,492.37, 1,200,334,517.19 and 478,666,916.37 is: 660,560,442.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,807,492.37 : 1,200,334,517.19 = 478,666,916.37 : x
  2. Step 2: Convert to fraction form
    869,807,492.37/1,200,334,517.19 = 478,666,916.37/x
  3. Step 3: Cross multiply
    869,807,492.37x = 1,200,334,517.19 × 478,666,916.37
  4. Step 4: Simplify right side
    869,807,492.37x = 574,560,421,955,810,112
  5. Step 5: Solve for x
    x = 574,560,421,955,810,112/869,807,492.37
  6. Step 6: Final answer
    x = 660,560,442.39

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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.