Home / 810,750,259.78-1,215,810,982.94-278,860,548.66

Finding the Fourth Proportional to 810,750,259.78, 1,215,810,982.94 and 278,860,548.66

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Solution

The fourth proportional to 810,750,259.78, 1,215,810,982.94 and 278,860,548.66 is: 418,182,681.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,750,259.78 : 1,215,810,982.94 = 278,860,548.66 : x
  2. Step 2: Convert to fraction form
    810,750,259.78/1,215,810,982.94 = 278,860,548.66/x
  3. Step 3: Cross multiply
    810,750,259.78x = 1,215,810,982.94 × 278,860,548.66
  4. Step 4: Simplify right side
    810,750,259.78x = 339,041,717,769,502,336
  5. Step 5: Solve for x
    x = 339,041,717,769,502,336/810,750,259.78
  6. Step 6: Final answer
    x = 418,182,681.63

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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.