Home / 918,362.12-1,377,236.96-385,783.88

Finding the Fourth Proportional to 918,362.12, 1,377,236.96 and 385,783.88

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Solution

The fourth proportional to 918,362.12, 1,377,236.96 and 385,783.88 is: 578,547.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,362.12 : 1,377,236.96 = 385,783.88 : x
  2. Step 2: Convert to fraction form
    918,362.12/1,377,236.96 = 385,783.88/x
  3. Step 3: Cross multiply
    918,362.12x = 1,377,236.96 × 385,783.88
  4. Step 4: Simplify right side
    918,362.12x = 531,315,818,108.21
  5. Step 5: Solve for x
    x = 531,315,818,108.21/918,362.12
  6. Step 6: Final answer
    x = 578,547.18

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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.