Home / 1,426,255,890.40-2,139,383,835.60-391,221,398.80

Finding the Fourth Proportional to 1,426,255,890.40, 2,139,383,835.60 and 391,221,398.80

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Solution

The fourth proportional to 1,426,255,890.40, 2,139,383,835.60 and 391,221,398.80 is: 586,832,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,255,890.40 : 2,139,383,835.60 = 391,221,398.80 : x
  2. Step 2: Convert to fraction form
    1,426,255,890.40/2,139,383,835.60 = 391,221,398.80/x
  3. Step 3: Cross multiply
    1,426,255,890.40x = 2,139,383,835.60 × 391,221,398.80
  4. Step 4: Simplify right side
    1,426,255,890.40x = 836,972,736,733,541,248
  5. Step 5: Solve for x
    x = 836,972,736,733,541,248/1,426,255,890.40
  6. Step 6: Final answer
    x = 586,832,098.20

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Double scale
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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.