Home / 955,783.74-1,318,981.49-520,204.21

Finding the Fourth Proportional to 955,783.74, 1,318,981.49 and 520,204.21

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Solution

The fourth proportional to 955,783.74, 1,318,981.49 and 520,204.21 is: 717,881.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    955,783.74 : 1,318,981.49 = 520,204.21 : x
  2. Step 2: Convert to fraction form
    955,783.74/1,318,981.49 = 520,204.21/x
  3. Step 3: Cross multiply
    955,783.74x = 1,318,981.49 × 520,204.21
  4. Step 4: Simplify right side
    955,783.74x = 686,139,724,010.07
  5. Step 5: Solve for x
    x = 686,139,724,010.07/955,783.74
  6. Step 6: Final answer
    x = 717,881.77

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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.