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Finding the Fourth Proportional to 718,980.72, 992,281.26 and 413,056.52

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Solution

The fourth proportional to 718,980.72, 992,281.26 and 413,056.52 is: 570,068.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,980.72 : 992,281.26 = 413,056.52 : x
  2. Step 2: Convert to fraction form
    718,980.72/992,281.26 = 413,056.52/x
  3. Step 3: Cross multiply
    718,980.72x = 992,281.26 × 413,056.52
  4. Step 4: Simplify right side
    718,980.72x = 409,868,244,116.82
  5. Step 5: Solve for x
    x = 409,868,244,116.82/718,980.72
  6. Step 6: Final answer
    x = 570,068.48

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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.