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Finding the Fourth Proportional to 965,786,332.40, 1,448,679,498.60 and 810,818,136.80

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Solution

The fourth proportional to 965,786,332.40, 1,448,679,498.60 and 810,818,136.80 is: 1,216,227,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,786,332.40 : 1,448,679,498.60 = 810,818,136.80 : x
  2. Step 2: Convert to fraction form
    965,786,332.40/1,448,679,498.60 = 810,818,136.80/x
  3. Step 3: Cross multiply
    965,786,332.40x = 1,448,679,498.60 × 810,818,136.80
  4. Step 4: Simplify right side
    965,786,332.40x = 1,174,615,611,875,209,984
  5. Step 5: Solve for x
    x = 1,174,615,611,875,209,984/965,786,332.40
  6. Step 6: Final answer
    x = 1,216,227,205.20

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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.