Home / 918,246.13-1,376,580.34-319,129.45

Finding the Fourth Proportional to 918,246.13, 1,376,580.34 and 319,129.45

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Solution

The fourth proportional to 918,246.13, 1,376,580.34 and 319,129.45 is: 478,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,246.13 : 1,376,580.34 = 319,129.45 : x
  2. Step 2: Convert to fraction form
    918,246.13/1,376,580.34 = 319,129.45/x
  3. Step 3: Cross multiply
    918,246.13x = 1,376,580.34 × 319,129.45
  4. Step 4: Simplify right side
    918,246.13x = 439,307,326,785.01
  5. Step 5: Solve for x
    x = 439,307,326,785.01/918,246.13
  6. Step 6: Final answer
    x = 478,420.01

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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.