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Finding the Fourth Proportional to 405,701.80, 607,386.30 and 363,711.40

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Solution

The fourth proportional to 405,701.80, 607,386.30 and 363,711.40 is: 544,521.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,701.80 : 607,386.30 = 363,711.40 : x
  2. Step 2: Convert to fraction form
    405,701.80/607,386.30 = 363,711.40/x
  3. Step 3: Cross multiply
    405,701.80x = 607,386.30 × 363,711.40
  4. Step 4: Simplify right side
    405,701.80x = 220,913,321,513.82
  5. Step 5: Solve for x
    x = 220,913,321,513.82/405,701.80
  6. Step 6: Final answer
    x = 544,521.42

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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.