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Finding the Fourth Proportional to 905,478, 1,249,598.52 and 503,070

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Solution

The fourth proportional to 905,478, 1,249,598.52 and 503,070 is: 694,258.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,478 : 1,249,598.52 = 503,070 : x
  2. Step 2: Convert to fraction form
    905,478/1,249,598.52 = 503,070/x
  3. Step 3: Cross multiply
    905,478x = 1,249,598.52 × 503,070
  4. Step 4: Simplify right side
    905,478x = 628,635,527,456.40
  5. Step 5: Solve for x
    x = 628,635,527,456.40/905,478
  6. Step 6: Final answer
    x = 694,258.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.