Home / 1,409,208.20-2,113,812.30-905,323.40

Finding the Fourth Proportional to 1,409,208.20, 2,113,812.30 and 905,323.40

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Solution

The fourth proportional to 1,409,208.20, 2,113,812.30 and 905,323.40 is: 1,357,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,208.20 : 2,113,812.30 = 905,323.40 : x
  2. Step 2: Convert to fraction form
    1,409,208.20/2,113,812.30 = 905,323.40/x
  3. Step 3: Cross multiply
    1,409,208.20x = 2,113,812.30 × 905,323.40
  4. Step 4: Simplify right side
    1,409,208.20x = 1,913,683,738,397.82
  5. Step 5: Solve for x
    x = 1,913,683,738,397.82/1,409,208.20
  6. Step 6: Final answer
    x = 1,357,985.10

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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.