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Finding the Fourth Proportional to 547,985.67, 821,978.64 and 358,605.51

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Solution

The fourth proportional to 547,985.67, 821,978.64 and 358,605.51 is: 537,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,985.67 : 821,978.64 = 358,605.51 : x
  2. Step 2: Convert to fraction form
    547,985.67/821,978.64 = 358,605.51/x
  3. Step 3: Cross multiply
    547,985.67x = 821,978.64 × 358,605.51
  4. Step 4: Simplify right side
    547,985.67x = 294,766,069,406.31
  5. Step 5: Solve for x
    x = 294,766,069,406.31/547,985.67
  6. Step 6: Final answer
    x = 537,908.35

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Similar ratio
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1.5x scale

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.