Home / 513,820,153.55-709,072,512.23-278,870,817.40

Finding the Fourth Proportional to 513,820,153.55, 709,072,512.23 and 278,870,817.40

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Solution

The fourth proportional to 513,820,153.55, 709,072,512.23 and 278,870,817.40 is: 384,842,108.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,820,153.55 : 709,072,512.23 = 278,870,817.40 : x
  2. Step 2: Convert to fraction form
    513,820,153.55/709,072,512.23 = 278,870,817.40/x
  3. Step 3: Cross multiply
    513,820,153.55x = 709,072,512.23 × 278,870,817.40
  4. Step 4: Simplify right side
    513,820,153.55x = 197,739,631,080,376,064
  5. Step 5: Solve for x
    x = 197,739,631,080,376,064/513,820,153.55
  6. Step 6: Final answer
    x = 384,842,108.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.