Home / 897,206.40-1,238,172.48-515,309.76

Finding the Fourth Proportional to 897,206.40, 1,238,172.48 and 515,309.76

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Solution

The fourth proportional to 897,206.40, 1,238,172.48 and 515,309.76 is: 711,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,206.40 : 1,238,172.48 = 515,309.76 : x
  2. Step 2: Convert to fraction form
    897,206.40/1,238,172.48 = 515,309.76/x
  3. Step 3: Cross multiply
    897,206.40x = 1,238,172.48 × 515,309.76
  4. Step 4: Simplify right side
    897,206.40x = 638,042,363,507.41
  5. Step 5: Solve for x
    x = 638,042,363,507.41/897,206.40
  6. Step 6: Final answer
    x = 711,143.35

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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.