Home / 1,281,210.72-1,768,001.40-708,213.96

Finding the Fourth Proportional to 1,281,210.72, 1,768,001.40 and 708,213.96

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Solution

The fourth proportional to 1,281,210.72, 1,768,001.40 and 708,213.96 is: 977,296.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,210.72 : 1,768,001.40 = 708,213.96 : x
  2. Step 2: Convert to fraction form
    1,281,210.72/1,768,001.40 = 708,213.96/x
  3. Step 3: Cross multiply
    1,281,210.72x = 1,768,001.40 × 708,213.96
  4. Step 4: Simplify right side
    1,281,210.72x = 1,252,123,272,779.54
  5. Step 5: Solve for x
    x = 1,252,123,272,779.54/1,281,210.72
  6. Step 6: Final answer
    x = 977,296.91

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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.