Home / 920,970-1,382,242.32-360,398.16

Finding the Fourth Proportional to 920,970, 1,382,242.32 and 360,398.16

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Solution

The fourth proportional to 920,970, 1,382,242.32 and 360,398.16 is: 540,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,970 : 1,382,242.32 = 360,398.16 : x
  2. Step 2: Convert to fraction form
    920,970/1,382,242.32 = 360,398.16/x
  3. Step 3: Cross multiply
    920,970x = 1,382,242.32 × 360,398.16
  4. Step 4: Simplify right side
    920,970x = 498,157,588,802.13
  5. Step 5: Solve for x
    x = 498,157,588,802.13/920,970
  6. Step 6: Final answer
    x = 540,905.34

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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.