Home / 990,999.34-1,366,277.74-715,125.67

Finding the Fourth Proportional to 990,999.34, 1,366,277.74 and 715,125.67

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Solution

The fourth proportional to 990,999.34, 1,366,277.74 and 715,125.67 is: 985,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,999.34 : 1,366,277.74 = 715,125.67 : x
  2. Step 2: Convert to fraction form
    990,999.34/1,366,277.74 = 715,125.67/x
  3. Step 3: Cross multiply
    990,999.34x = 1,366,277.74 × 715,125.67
  4. Step 4: Simplify right side
    990,999.34x = 977,060,284,223.59
  5. Step 5: Solve for x
    x = 977,060,284,223.59/990,999.34
  6. Step 6: Final answer
    x = 985,934.34

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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.