Home / 918,440.90-1,377,333.30-319,421.60

Finding the Fourth Proportional to 918,440.90, 1,377,333.30 and 319,421.60

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Solution

The fourth proportional to 918,440.90, 1,377,333.30 and 319,421.60 is: 479,018.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,440.90 : 1,377,333.30 = 319,421.60 : x
  2. Step 2: Convert to fraction form
    918,440.90/1,377,333.30 = 319,421.60/x
  3. Step 3: Cross multiply
    918,440.90x = 1,377,333.30 × 319,421.60
  4. Step 4: Simplify right side
    918,440.90x = 439,950,006,419.28
  5. Step 5: Solve for x
    x = 439,950,006,419.28/918,440.90
  6. Step 6: Final answer
    x = 479,018.31

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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.