Home / 918,624.32-1,377,192.96-287,213.12

Finding the Fourth Proportional to 918,624.32, 1,377,192.96 and 287,213.12

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Solution

The fourth proportional to 918,624.32, 1,377,192.96 and 287,213.12 is: 430,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,624.32 : 1,377,192.96 = 287,213.12 : x
  2. Step 2: Convert to fraction form
    918,624.32/1,377,192.96 = 287,213.12/x
  3. Step 3: Cross multiply
    918,624.32x = 1,377,192.96 × 287,213.12
  4. Step 4: Simplify right side
    918,624.32x = 395,547,886,883.64
  5. Step 5: Solve for x
    x = 395,547,886,883.64/918,624.32
  6. Step 6: Final answer
    x = 430,587.21

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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.