Home / 920,123.89-1,270,833.73-613,667.77

Finding the Fourth Proportional to 920,123.89, 1,270,833.73 and 613,667.77

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Solution

The fourth proportional to 920,123.89, 1,270,833.73 and 613,667.77 is: 847,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,123.89 : 1,270,833.73 = 613,667.77 : x
  2. Step 2: Convert to fraction form
    920,123.89/1,270,833.73 = 613,667.77/x
  3. Step 3: Cross multiply
    920,123.89x = 1,270,833.73 × 613,667.77
  4. Step 4: Simplify right side
    920,123.89x = 779,869,696,418.63
  5. Step 5: Solve for x
    x = 779,869,696,418.63/920,123.89
  6. Step 6: Final answer
    x = 847,570.32

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Double scale
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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.