Home / 990,623.40-1,485,935.10-359,455.20

Finding the Fourth Proportional to 990,623.40, 1,485,935.10 and 359,455.20

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Solution

The fourth proportional to 990,623.40, 1,485,935.10 and 359,455.20 is: 539,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,623.40 : 1,485,935.10 = 359,455.20 : x
  2. Step 2: Convert to fraction form
    990,623.40/1,485,935.10 = 359,455.20/x
  3. Step 3: Cross multiply
    990,623.40x = 1,485,935.10 × 359,455.20
  4. Step 4: Simplify right side
    990,623.40x = 534,127,098,557.52
  5. Step 5: Solve for x
    x = 534,127,098,557.52/990,623.40
  6. Step 6: Final answer
    x = 539,182.80

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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.