Home / 908,678.89-1,253,971.09-495,214.93

Finding the Fourth Proportional to 908,678.89, 1,253,971.09 and 495,214.93

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Solution

The fourth proportional to 908,678.89, 1,253,971.09 and 495,214.93 is: 683,393.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,678.89 : 1,253,971.09 = 495,214.93 : x
  2. Step 2: Convert to fraction form
    908,678.89/1,253,971.09 = 495,214.93/x
  3. Step 3: Cross multiply
    908,678.89x = 1,253,971.09 × 495,214.93
  4. Step 4: Simplify right side
    908,678.89x = 620,985,207,742.86
  5. Step 5: Solve for x
    x = 620,985,207,742.86/908,678.89
  6. Step 6: Final answer
    x = 683,393.46

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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.