Home / 900,879.53-1,243,213.84-492,981.45

Finding the Fourth Proportional to 900,879.53, 1,243,213.84 and 492,981.45

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Solution

The fourth proportional to 900,879.53, 1,243,213.84 and 492,981.45 is: 680,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,879.53 : 1,243,213.84 = 492,981.45 : x
  2. Step 2: Convert to fraction form
    900,879.53/1,243,213.84 = 492,981.45/x
  3. Step 3: Cross multiply
    900,879.53x = 1,243,213.84 × 492,981.45
  4. Step 4: Simplify right side
    900,879.53x = 612,881,360,270.81
  5. Step 5: Solve for x
    x = 612,881,360,270.81/900,879.53
  6. Step 6: Final answer
    x = 680,314.45

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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.