Home / 770,162.40-1,152,133.20-666,136.80

Finding the Fourth Proportional to 770,162.40, 1,152,133.20 and 666,136.80

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Solution

The fourth proportional to 770,162.40, 1,152,133.20 and 666,136.80 is: 996,514.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,162.40 : 1,152,133.20 = 666,136.80 : x
  2. Step 2: Convert to fraction form
    770,162.40/1,152,133.20 = 666,136.80/x
  3. Step 3: Cross multiply
    770,162.40x = 1,152,133.20 × 666,136.80
  4. Step 4: Simplify right side
    770,162.40x = 767,478,323,021.76
  5. Step 5: Solve for x
    x = 767,478,323,021.76/770,162.40
  6. Step 6: Final answer
    x = 996,514.92

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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.