Home / 849,417.46-1,274,913.87-428,988.34

Finding the Fourth Proportional to 849,417.46, 1,274,913.87 and 428,988.34

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Solution

The fourth proportional to 849,417.46, 1,274,913.87 and 428,988.34 is: 643,880.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,417.46 : 1,274,913.87 = 428,988.34 : x
  2. Step 2: Convert to fraction form
    849,417.46/1,274,913.87 = 428,988.34/x
  3. Step 3: Cross multiply
    849,417.46x = 1,274,913.87 × 428,988.34
  4. Step 4: Simplify right side
    849,417.46x = 546,923,184,734.28
  5. Step 5: Solve for x
    x = 546,923,184,734.28/849,417.46
  6. Step 6: Final answer
    x = 643,880.32

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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.