Home / 870,474.77-1,306,081.17-421,530.14

Finding the Fourth Proportional to 870,474.77, 1,306,081.17 and 421,530.14

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Solution

The fourth proportional to 870,474.77, 1,306,081.17 and 421,530.14 is: 632,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,474.77 : 1,306,081.17 = 421,530.14 : x
  2. Step 2: Convert to fraction form
    870,474.77/1,306,081.17 = 421,530.14/x
  3. Step 3: Cross multiply
    870,474.77x = 1,306,081.17 × 421,530.14
  4. Step 4: Simplify right side
    870,474.77x = 550,552,571,911.06
  5. Step 5: Solve for x
    x = 550,552,571,911.06/870,474.77
  6. Step 6: Final answer
    x = 632,473.90

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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.