Home / 1,115,273,246.40-1,672,909,869.60-388,020,254.40

Finding the Fourth Proportional to 1,115,273,246.40, 1,672,909,869.60 and 388,020,254.40

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Solution

The fourth proportional to 1,115,273,246.40, 1,672,909,869.60 and 388,020,254.40 is: 582,030,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,273,246.40 : 1,672,909,869.60 = 388,020,254.40 : x
  2. Step 2: Convert to fraction form
    1,115,273,246.40/1,672,909,869.60 = 388,020,254.40/x
  3. Step 3: Cross multiply
    1,115,273,246.40x = 1,672,909,869.60 × 388,020,254.40
  4. Step 4: Simplify right side
    1,115,273,246.40x = 649,122,913,190,462,720
  5. Step 5: Solve for x
    x = 649,122,913,190,462,720/1,115,273,246.40
  6. Step 6: Final answer
    x = 582,030,381.60

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Double scale
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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.