Home / 847,477,400.70-1,272,027,915.45-438,826,827.90

Finding the Fourth Proportional to 847,477,400.70, 1,272,027,915.45 and 438,826,827.90

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Solution

The fourth proportional to 847,477,400.70, 1,272,027,915.45 and 438,826,827.90 is: 658,660,602.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,477,400.70 : 1,272,027,915.45 = 438,826,827.90 : x
  2. Step 2: Convert to fraction form
    847,477,400.70/1,272,027,915.45 = 438,826,827.90/x
  3. Step 3: Cross multiply
    847,477,400.70x = 1,272,027,915.45 × 438,826,827.90
  4. Step 4: Simplify right side
    847,477,400.70x = 558,199,975,137,172,864
  5. Step 5: Solve for x
    x = 558,199,975,137,172,864/847,477,400.70
  6. Step 6: Final answer
    x = 658,660,602.25

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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.