Home / 918,289.92-1,377,331.20-319,150.08

Finding the Fourth Proportional to 918,289.92, 1,377,331.20 and 319,150.08

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Solution

The fourth proportional to 918,289.92, 1,377,331.20 and 319,150.08 is: 478,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,289.92 : 1,377,331.20 = 319,150.08 : x
  2. Step 2: Convert to fraction form
    918,289.92/1,377,331.20 = 319,150.08/x
  3. Step 3: Cross multiply
    918,289.92x = 1,377,331.20 × 319,150.08
  4. Step 4: Simplify right side
    918,289.92x = 439,575,362,666.50
  5. Step 5: Solve for x
    x = 439,575,362,666.50/918,289.92
  6. Step 6: Final answer
    x = 478,689.09

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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.