Home / 990,058.25-1,485,712.13-421,438.49

Finding the Fourth Proportional to 990,058.25, 1,485,712.13 and 421,438.49

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Solution

The fourth proportional to 990,058.25, 1,485,712.13 and 421,438.49 is: 632,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,058.25 : 1,485,712.13 = 421,438.49 : x
  2. Step 2: Convert to fraction form
    990,058.25/1,485,712.13 = 421,438.49/x
  3. Step 3: Cross multiply
    990,058.25x = 1,485,712.13 × 421,438.49
  4. Step 4: Simplify right side
    990,058.25x = 626,136,274,534.69
  5. Step 5: Solve for x
    x = 626,136,274,534.69/990,058.25
  6. Step 6: Final answer
    x = 632,423.67

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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.