Home / 879,963.18-1,319,949.63-318,983.10

Finding the Fourth Proportional to 879,963.18, 1,319,949.63 and 318,983.10

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Solution

The fourth proportional to 879,963.18, 1,319,949.63 and 318,983.10 is: 478,476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,963.18 : 1,319,949.63 = 318,983.10 : x
  2. Step 2: Convert to fraction form
    879,963.18/1,319,949.63 = 318,983.10/x
  3. Step 3: Cross multiply
    879,963.18x = 1,319,949.63 × 318,983.10
  4. Step 4: Simplify right side
    879,963.18x = 421,041,624,821.25
  5. Step 5: Solve for x
    x = 421,041,624,821.25/879,963.18
  6. Step 6: Final answer
    x = 478,476.41

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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.