Home / 1,335,921.84-1,999,152-830,720.40

Finding the Fourth Proportional to 1,335,921.84, 1,999,152 and 830,720.40

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Solution

The fourth proportional to 1,335,921.84, 1,999,152 and 830,720.40 is: 1,243,138.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,921.84 : 1,999,152 = 830,720.40 : x
  2. Step 2: Convert to fraction form
    1,335,921.84/1,999,152 = 830,720.40/x
  3. Step 3: Cross multiply
    1,335,921.84x = 1,999,152 × 830,720.40
  4. Step 4: Simplify right side
    1,335,921.84x = 1,660,736,349,100.80
  5. Step 5: Solve for x
    x = 1,660,736,349,100.80/1,335,921.84
  6. Step 6: Final answer
    x = 1,243,138.86

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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.