Home / 1,248,000.90-1,872,001.35-768,999.30

Finding the Fourth Proportional to 1,248,000.90, 1,872,001.35 and 768,999.30

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Solution

The fourth proportional to 1,248,000.90, 1,872,001.35 and 768,999.30 is: 1,153,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,000.90 : 1,872,001.35 = 768,999.30 : x
  2. Step 2: Convert to fraction form
    1,248,000.90/1,872,001.35 = 768,999.30/x
  3. Step 3: Cross multiply
    1,248,000.90x = 1,872,001.35 × 768,999.30
  4. Step 4: Simplify right side
    1,248,000.90x = 1,439,567,727,749.06
  5. Step 5: Solve for x
    x = 1,439,567,727,749.06/1,248,000.90
  6. Step 6: Final answer
    x = 1,153,498.95

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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.