Home / 918,829,136.80-1,378,243,705.20-305,333,646.40

Finding the Fourth Proportional to 918,829,136.80, 1,378,243,705.20 and 305,333,646.40

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Solution

The fourth proportional to 918,829,136.80, 1,378,243,705.20 and 305,333,646.40 is: 458,000,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,829,136.80 : 1,378,243,705.20 = 305,333,646.40 : x
  2. Step 2: Convert to fraction form
    918,829,136.80/1,378,243,705.20 = 305,333,646.40/x
  3. Step 3: Cross multiply
    918,829,136.80x = 1,378,243,705.20 × 305,333,646.40
  4. Step 4: Simplify right side
    918,829,136.80x = 420,824,176,136,562,624
  5. Step 5: Solve for x
    x = 420,824,176,136,562,624/918,829,136.80
  6. Step 6: Final answer
    x = 458,000,469.60

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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.