Home / 828,159,128.40-1,242,238,692.60-637,056,152.40

Finding the Fourth Proportional to 828,159,128.40, 1,242,238,692.60 and 637,056,152.40

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Solution

The fourth proportional to 828,159,128.40, 1,242,238,692.60 and 637,056,152.40 is: 955,584,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,159,128.40 : 1,242,238,692.60 = 637,056,152.40 : x
  2. Step 2: Convert to fraction form
    828,159,128.40/1,242,238,692.60 = 637,056,152.40/x
  3. Step 3: Cross multiply
    828,159,128.40x = 1,242,238,692.60 × 637,056,152.40
  4. Step 4: Simplify right side
    828,159,128.40x = 791,375,801,870,162,304
  5. Step 5: Solve for x
    x = 791,375,801,870,162,304/828,159,128.40
  6. Step 6: Final answer
    x = 955,584,228.60

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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.