Home / 645,148.50-961,472.15-611,556.18

Finding the Fourth Proportional to 645,148.50, 961,472.15 and 611,556.18

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Solution

The fourth proportional to 645,148.50, 961,472.15 and 611,556.18 is: 911,409.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,148.50 : 961,472.15 = 611,556.18 : x
  2. Step 2: Convert to fraction form
    645,148.50/961,472.15 = 611,556.18/x
  3. Step 3: Cross multiply
    645,148.50x = 961,472.15 × 611,556.18
  4. Step 4: Simplify right side
    645,148.50x = 587,994,232,172.61
  5. Step 5: Solve for x
    x = 587,994,232,172.61/645,148.50
  6. Step 6: Final answer
    x = 911,409.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.