Home / 912,520.08-1,369,003.14-643,173.48

Finding the Fourth Proportional to 912,520.08, 1,369,003.14 and 643,173.48

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Solution

The fourth proportional to 912,520.08, 1,369,003.14 and 643,173.48 is: 964,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,520.08 : 1,369,003.14 = 643,173.48 : x
  2. Step 2: Convert to fraction form
    912,520.08/1,369,003.14 = 643,173.48/x
  3. Step 3: Cross multiply
    912,520.08x = 1,369,003.14 × 643,173.48
  4. Step 4: Simplify right side
    912,520.08x = 880,506,513,684.73
  5. Step 5: Solve for x
    x = 880,506,513,684.73/912,520.08
  6. Step 6: Final answer
    x = 964,917.41

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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.