Home / 919,328,006.40-1,378,992,009.60-575,342,649.60

Finding the Fourth Proportional to 919,328,006.40, 1,378,992,009.60 and 575,342,649.60

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Solution

The fourth proportional to 919,328,006.40, 1,378,992,009.60 and 575,342,649.60 is: 863,013,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,328,006.40 : 1,378,992,009.60 = 575,342,649.60 : x
  2. Step 2: Convert to fraction form
    919,328,006.40/1,378,992,009.60 = 575,342,649.60/x
  3. Step 3: Cross multiply
    919,328,006.40x = 1,378,992,009.60 × 575,342,649.60
  4. Step 4: Simplify right side
    919,328,006.40x = 793,392,916,580,492,672
  5. Step 5: Solve for x
    x = 793,392,916,580,492,672/919,328,006.40
  6. Step 6: Final answer
    x = 863,013,974.40

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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.