Home / 918,000.30-1,377,000.45-356,670.30

Finding the Fourth Proportional to 918,000.30, 1,377,000.45 and 356,670.30

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Solution

The fourth proportional to 918,000.30, 1,377,000.45 and 356,670.30 is: 535,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,000.30 : 1,377,000.45 = 356,670.30 : x
  2. Step 2: Convert to fraction form
    918,000.30/1,377,000.45 = 356,670.30/x
  3. Step 3: Cross multiply
    918,000.30x = 1,377,000.45 × 356,670.30
  4. Step 4: Simplify right side
    918,000.30x = 491,135,163,601.64
  5. Step 5: Solve for x
    x = 491,135,163,601.64/918,000.30
  6. Step 6: Final answer
    x = 535,005.45

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Half scale
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Double scale
Find fourth proportional to 918,001.30, 1,377,001.95 and 356,671.30
Similar ratio
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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.