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Finding the Fourth Proportional to 553,506.78, 830,575.89 and 216,574.86

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Solution

The fourth proportional to 553,506.78, 830,575.89 and 216,574.86 is: 324,985.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,506.78 : 830,575.89 = 216,574.86 : x
  2. Step 2: Convert to fraction form
    553,506.78/830,575.89 = 216,574.86/x
  3. Step 3: Cross multiply
    553,506.78x = 830,575.89 × 216,574.86
  4. Step 4: Simplify right side
    553,506.78x = 179,881,857,096.13
  5. Step 5: Solve for x
    x = 179,881,857,096.13/553,506.78
  6. Step 6: Final answer
    x = 324,985.82

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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.