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Finding the Fourth Proportional to 897,728.88, 1,238,779.80 and 495,294.96

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Solution

The fourth proportional to 897,728.88, 1,238,779.80 and 495,294.96 is: 683,459.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,728.88 : 1,238,779.80 = 495,294.96 : x
  2. Step 2: Convert to fraction form
    897,728.88/1,238,779.80 = 495,294.96/x
  3. Step 3: Cross multiply
    897,728.88x = 1,238,779.80 × 495,294.96
  4. Step 4: Simplify right side
    897,728.88x = 613,561,391,489.81
  5. Step 5: Solve for x
    x = 613,561,391,489.81/897,728.88
  6. Step 6: Final answer
    x = 683,459.57

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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.