Home / 1,299,430.30-1,949,423.55-388,684.21

Finding the Fourth Proportional to 1,299,430.30, 1,949,423.55 and 388,684.21

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Solution

The fourth proportional to 1,299,430.30, 1,949,423.55 and 388,684.21 is: 583,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,430.30 : 1,949,423.55 = 388,684.21 : x
  2. Step 2: Convert to fraction form
    1,299,430.30/1,949,423.55 = 388,684.21/x
  3. Step 3: Cross multiply
    1,299,430.30x = 1,949,423.55 × 388,684.21
  4. Step 4: Simplify right side
    1,299,430.30x = 757,710,152,487.15
  5. Step 5: Solve for x
    x = 757,710,152,487.15/1,299,430.30
  6. Step 6: Final answer
    x = 583,109.50

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Double scale
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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.