Home / 900,129.15-1,242,159.44-492,226.38

Finding the Fourth Proportional to 900,129.15, 1,242,159.44 and 492,226.38

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Solution

The fourth proportional to 900,129.15, 1,242,159.44 and 492,226.38 is: 679,262.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,129.15 : 1,242,159.44 = 492,226.38 : x
  2. Step 2: Convert to fraction form
    900,129.15/1,242,159.44 = 492,226.38/x
  3. Step 3: Cross multiply
    900,129.15x = 1,242,159.44 × 492,226.38
  4. Step 4: Simplify right side
    900,129.15x = 611,423,642,072.90
  5. Step 5: Solve for x
    x = 611,423,642,072.90/900,129.15
  6. Step 6: Final answer
    x = 679,262.13

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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.