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Finding the Fourth Proportional to 621,014.80, 870,601.70 and 621,014.80

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Solution

The fourth proportional to 621,014.80, 870,601.70 and 621,014.80 is: 870,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,014.80 : 870,601.70 = 621,014.80 : x
  2. Step 2: Convert to fraction form
    621,014.80/870,601.70 = 621,014.80/x
  3. Step 3: Cross multiply
    621,014.80x = 870,601.70 × 621,014.80
  4. Step 4: Simplify right side
    621,014.80x = 540,656,540,605.16
  5. Step 5: Solve for x
    x = 540,656,540,605.16/621,014.80
  6. Step 6: Final answer
    x = 870,601.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.