Home / 918,242.31-1,376,574.62-319,125.63

Finding the Fourth Proportional to 918,242.31, 1,376,574.62 and 319,125.63

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Solution

The fourth proportional to 918,242.31, 1,376,574.62 and 319,125.63 is: 478,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,242.31 : 1,376,574.62 = 319,125.63 : x
  2. Step 2: Convert to fraction form
    918,242.31/1,376,574.62 = 319,125.63/x
  3. Step 3: Cross multiply
    918,242.31x = 1,376,574.62 × 319,125.63
  4. Step 4: Simplify right side
    918,242.31x = 439,300,242,849.51
  5. Step 5: Solve for x
    x = 439,300,242,849.51/918,242.31
  6. Step 6: Final answer
    x = 478,414.29

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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.