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Finding the Fourth Proportional to 710,955.45, 981,130.19 and 424,500.57

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Solution

The fourth proportional to 710,955.45, 981,130.19 and 424,500.57 is: 585,817.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,955.45 : 981,130.19 = 424,500.57 : x
  2. Step 2: Convert to fraction form
    710,955.45/981,130.19 = 424,500.57/x
  3. Step 3: Cross multiply
    710,955.45x = 981,130.19 × 424,500.57
  4. Step 4: Simplify right side
    710,955.45x = 416,490,322,776.71
  5. Step 5: Solve for x
    x = 416,490,322,776.71/710,955.45
  6. Step 6: Final answer
    x = 585,817.75

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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.