Home / 821,005,587.90-1,229,791,441.05-384,678,675.90

Finding the Fourth Proportional to 821,005,587.90, 1,229,791,441.05 and 384,678,675.90

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Solution

The fourth proportional to 821,005,587.90, 1,229,791,441.05 and 384,678,675.90 is: 576,213,548.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,005,587.90 : 1,229,791,441.05 = 384,678,675.90 : x
  2. Step 2: Convert to fraction form
    821,005,587.90/1,229,791,441.05 = 384,678,675.90/x
  3. Step 3: Cross multiply
    821,005,587.90x = 1,229,791,441.05 × 384,678,675.90
  4. Step 4: Simplify right side
    821,005,587.90x = 473,074,543,176,266,880
  5. Step 5: Solve for x
    x = 473,074,543,176,266,880/821,005,587.90
  6. Step 6: Final answer
    x = 576,213,548.54

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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.