Home / 939,315.80-1,408,970.06-340,136.81

Finding the Fourth Proportional to 939,315.80, 1,408,970.06 and 340,136.81

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Solution

The fourth proportional to 939,315.80, 1,408,970.06 and 340,136.81 is: 510,203.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,315.80 : 1,408,970.06 = 340,136.81 : x
  2. Step 2: Convert to fraction form
    939,315.80/1,408,970.06 = 340,136.81/x
  3. Step 3: Cross multiply
    939,315.80x = 1,408,970.06 × 340,136.81
  4. Step 4: Simplify right side
    939,315.80x = 479,242,579,407.53
  5. Step 5: Solve for x
    x = 479,242,579,407.53/939,315.80
  6. Step 6: Final answer
    x = 510,203.89

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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.