Home / 1,391,824.40-1,921,642.80-1,068,957.50

Finding the Fourth Proportional to 1,391,824.40, 1,921,642.80 and 1,068,957.50

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Solution

The fourth proportional to 1,391,824.40, 1,921,642.80 and 1,068,957.50 is: 1,475,871.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,824.40 : 1,921,642.80 = 1,068,957.50 : x
  2. Step 2: Convert to fraction form
    1,391,824.40/1,921,642.80 = 1,068,957.50/x
  3. Step 3: Cross multiply
    1,391,824.40x = 1,921,642.80 × 1,068,957.50
  4. Step 4: Simplify right side
    1,391,824.40x = 2,054,154,483,381
  5. Step 5: Solve for x
    x = 2,054,154,483,381/1,391,824.40
  6. Step 6: Final answer
    x = 1,475,871.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.