Home / 860,900.74-1,187,722.12-538,488.34

Finding the Fourth Proportional to 860,900.74, 1,187,722.12 and 538,488.34

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Solution

The fourth proportional to 860,900.74, 1,187,722.12 and 538,488.34 is: 742,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,900.74 : 1,187,722.12 = 538,488.34 : x
  2. Step 2: Convert to fraction form
    860,900.74/1,187,722.12 = 538,488.34/x
  3. Step 3: Cross multiply
    860,900.74x = 1,187,722.12 × 538,488.34
  4. Step 4: Simplify right side
    860,900.74x = 639,574,512,780.08
  5. Step 5: Solve for x
    x = 639,574,512,780.08/860,900.74
  6. Step 6: Final answer
    x = 742,913.19

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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.