Home / 838,561,831.40-1,257,842,747.10-256,294,951.40

Finding the Fourth Proportional to 838,561,831.40, 1,257,842,747.10 and 256,294,951.40

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Solution

The fourth proportional to 838,561,831.40, 1,257,842,747.10 and 256,294,951.40 is: 384,442,427.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,561,831.40 : 1,257,842,747.10 = 256,294,951.40 : x
  2. Step 2: Convert to fraction form
    838,561,831.40/1,257,842,747.10 = 256,294,951.40/x
  3. Step 3: Cross multiply
    838,561,831.40x = 1,257,842,747.10 × 256,294,951.40
  4. Step 4: Simplify right side
    838,561,831.40x = 322,378,745,736,836,992
  5. Step 5: Solve for x
    x = 322,378,745,736,836,992/838,561,831.40
  6. Step 6: Final answer
    x = 384,442,427.10

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1.5x scale

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.