Home / 501,980,631.78-692,750,094.20-278,971,712.84

Finding the Fourth Proportional to 501,980,631.78, 692,750,094.20 and 278,971,712.84

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Solution

The fourth proportional to 501,980,631.78, 692,750,094.20 and 278,971,712.84 is: 384,990,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,980,631.78 : 692,750,094.20 = 278,971,712.84 : x
  2. Step 2: Convert to fraction form
    501,980,631.78/692,750,094.20 = 278,971,712.84/x
  3. Step 3: Cross multiply
    501,980,631.78x = 692,750,094.20 × 278,971,712.84
  4. Step 4: Simplify right side
    501,980,631.78x = 193,257,680,349,045,344
  5. Step 5: Solve for x
    x = 193,257,680,349,045,344/501,980,631.78
  6. Step 6: Final answer
    x = 384,990,312.60

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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.