Home / 686,255,415.32-947,042,064.06-372,989,535.32

Finding the Fourth Proportional to 686,255,415.32, 947,042,064.06 and 372,989,535.32

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Solution

The fourth proportional to 686,255,415.32, 947,042,064.06 and 372,989,535.32 is: 514,730,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,255,415.32 : 947,042,064.06 = 372,989,535.32 : x
  2. Step 2: Convert to fraction form
    686,255,415.32/947,042,064.06 = 372,989,535.32/x
  3. Step 3: Cross multiply
    686,255,415.32x = 947,042,064.06 × 372,989,535.32
  4. Step 4: Simplify right side
    686,255,415.32x = 353,236,779,402,233,024
  5. Step 5: Solve for x
    x = 353,236,779,402,233,024/686,255,415.32
  6. Step 6: Final answer
    x = 514,730,771.54

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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.