Home / 918,000.10-1,377,000.15-385,344.10

Finding the Fourth Proportional to 918,000.10, 1,377,000.15 and 385,344.10

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Solution

The fourth proportional to 918,000.10, 1,377,000.15 and 385,344.10 is: 578,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,000.10 : 1,377,000.15 = 385,344.10 : x
  2. Step 2: Convert to fraction form
    918,000.10/1,377,000.15 = 385,344.10/x
  3. Step 3: Cross multiply
    918,000.10x = 1,377,000.15 × 385,344.10
  4. Step 4: Simplify right side
    918,000.10x = 530,618,883,501.62
  5. Step 5: Solve for x
    x = 530,618,883,501.62/918,000.10
  6. Step 6: Final answer
    x = 578,016.15

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Double scale
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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.