Home / 739,328.20-1,109,510.70-318,905.80

Finding the Fourth Proportional to 739,328.20, 1,109,510.70 and 318,905.80

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Solution

The fourth proportional to 739,328.20, 1,109,510.70 and 318,905.80 is: 478,582.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,328.20 : 1,109,510.70 = 318,905.80 : x
  2. Step 2: Convert to fraction form
    739,328.20/1,109,510.70 = 318,905.80/x
  3. Step 3: Cross multiply
    739,328.20x = 1,109,510.70 × 318,905.80
  4. Step 4: Simplify right side
    739,328.20x = 353,829,397,392.06
  5. Step 5: Solve for x
    x = 353,829,397,392.06/739,328.20
  6. Step 6: Final answer
    x = 478,582.31

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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.