Home / 820,986.38-1,132,980.45-458,397.98

Finding the Fourth Proportional to 820,986.38, 1,132,980.45 and 458,397.98

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Solution

The fourth proportional to 820,986.38, 1,132,980.45 and 458,397.98 is: 632,599.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,986.38 : 1,132,980.45 = 458,397.98 : x
  2. Step 2: Convert to fraction form
    820,986.38/1,132,980.45 = 458,397.98/x
  3. Step 3: Cross multiply
    820,986.38x = 1,132,980.45 × 458,397.98
  4. Step 4: Simplify right side
    820,986.38x = 519,355,949,659.49
  5. Step 5: Solve for x
    x = 519,355,949,659.49/820,986.38
  6. Step 6: Final answer
    x = 632,599.96

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1.5x scale

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.