Home / 686,255,408.57-947,042,054.76-372,989,528.57

Finding the Fourth Proportional to 686,255,408.57, 947,042,054.76 and 372,989,528.57

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Solution

The fourth proportional to 686,255,408.57, 947,042,054.76 and 372,989,528.57 is: 514,730,762.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,255,408.57 : 947,042,054.76 = 372,989,528.57 : x
  2. Step 2: Convert to fraction form
    686,255,408.57/947,042,054.76 = 372,989,528.57/x
  3. Step 3: Cross multiply
    686,255,408.57x = 947,042,054.76 × 372,989,528.57
  4. Step 4: Simplify right side
    686,255,408.57x = 353,236,769,540,896,512
  5. Step 5: Solve for x
    x = 353,236,769,540,896,512/686,255,408.57
  6. Step 6: Final answer
    x = 514,730,762.23

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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.