Home / 1,287,288.35-1,931,209.37-434,381.16

Finding the Fourth Proportional to 1,287,288.35, 1,931,209.37 and 434,381.16

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Solution

The fourth proportional to 1,287,288.35, 1,931,209.37 and 434,381.16 is: 651,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,288.35 : 1,931,209.37 = 434,381.16 : x
  2. Step 2: Convert to fraction form
    1,287,288.35/1,931,209.37 = 434,381.16/x
  3. Step 3: Cross multiply
    1,287,288.35x = 1,931,209.37 × 434,381.16
  4. Step 4: Simplify right side
    1,287,288.35x = 838,880,964,171.56
  5. Step 5: Solve for x
    x = 838,880,964,171.56/1,287,288.35
  6. Step 6: Final answer
    x = 651,665.16

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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.