Home / 900,291.38-1,242,356.04-492,313.92

Finding the Fourth Proportional to 900,291.38, 1,242,356.04 and 492,313.92

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Solution

The fourth proportional to 900,291.38, 1,242,356.04 and 492,313.92 is: 679,368.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,291.38 : 1,242,356.04 = 492,313.92 : x
  2. Step 2: Convert to fraction form
    900,291.38/1,242,356.04 = 492,313.92/x
  3. Step 3: Cross multiply
    900,291.38x = 1,242,356.04 × 492,313.92
  4. Step 4: Simplify right side
    900,291.38x = 611,629,172,088.08
  5. Step 5: Solve for x
    x = 611,629,172,088.08/900,291.38
  6. Step 6: Final answer
    x = 679,368.02

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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.