Home / 402,885,780.80-604,328,671.20-280,441,774.40

Finding the Fourth Proportional to 402,885,780.80, 604,328,671.20 and 280,441,774.40

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Solution

The fourth proportional to 402,885,780.80, 604,328,671.20 and 280,441,774.40 is: 420,662,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,885,780.80 : 604,328,671.20 = 280,441,774.40 : x
  2. Step 2: Convert to fraction form
    402,885,780.80/604,328,671.20 = 280,441,774.40/x
  3. Step 3: Cross multiply
    402,885,780.80x = 604,328,671.20 × 280,441,774.40
  4. Step 4: Simplify right side
    402,885,780.80x = 169,479,004,872,122,176
  5. Step 5: Solve for x
    x = 169,479,004,872,122,176/402,885,780.80
  6. Step 6: Final answer
    x = 420,662,661.60

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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.