Home / 918,072.60-1,377,108.90-385,416.60

Finding the Fourth Proportional to 918,072.60, 1,377,108.90 and 385,416.60

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Solution

The fourth proportional to 918,072.60, 1,377,108.90 and 385,416.60 is: 578,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,072.60 : 1,377,108.90 = 385,416.60 : x
  2. Step 2: Convert to fraction form
    918,072.60/1,377,108.90 = 385,416.60/x
  3. Step 3: Cross multiply
    918,072.60x = 1,377,108.90 × 385,416.60
  4. Step 4: Simplify right side
    918,072.60x = 530,760,630,067.74
  5. Step 5: Solve for x
    x = 530,760,630,067.74/918,072.60
  6. Step 6: Final answer
    x = 578,124.90

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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.