Home / 939,355.07-1,296,312.31-509,635.08

Finding the Fourth Proportional to 939,355.07, 1,296,312.31 and 509,635.08

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Solution

The fourth proportional to 939,355.07, 1,296,312.31 and 509,635.08 is: 703,297.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,355.07 : 1,296,312.31 = 509,635.08 : x
  2. Step 2: Convert to fraction form
    939,355.07/1,296,312.31 = 509,635.08/x
  3. Step 3: Cross multiply
    939,355.07x = 1,296,312.31 × 509,635.08
  4. Step 4: Simplify right side
    939,355.07x = 660,646,228,448.88
  5. Step 5: Solve for x
    x = 660,646,228,448.88/939,355.07
  6. Step 6: Final answer
    x = 703,297.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.