Home / 866,058,004.80-1,299,087,007.20-858,405,254.40

Finding the Fourth Proportional to 866,058,004.80, 1,299,087,007.20 and 858,405,254.40

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Solution

The fourth proportional to 866,058,004.80, 1,299,087,007.20 and 858,405,254.40 is: 1,287,607,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,058,004.80 : 1,299,087,007.20 = 858,405,254.40 : x
  2. Step 2: Convert to fraction form
    866,058,004.80/1,299,087,007.20 = 858,405,254.40/x
  3. Step 3: Cross multiply
    866,058,004.80x = 1,299,087,007.20 × 858,405,254.40
  4. Step 4: Simplify right side
    866,058,004.80x = 1,115,143,112,903,250,688
  5. Step 5: Solve for x
    x = 1,115,143,112,903,250,688/866,058,004.80
  6. Step 6: Final answer
    x = 1,287,607,881.60

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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.