Home / 840,135.21-1,159,476.51-513,639.81

Finding the Fourth Proportional to 840,135.21, 1,159,476.51 and 513,639.81

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Solution

The fourth proportional to 840,135.21, 1,159,476.51 and 513,639.81 is: 708,877.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,135.21 : 1,159,476.51 = 513,639.81 : x
  2. Step 2: Convert to fraction form
    840,135.21/1,159,476.51 = 513,639.81/x
  3. Step 3: Cross multiply
    840,135.21x = 1,159,476.51 × 513,639.81
  4. Step 4: Simplify right side
    840,135.21x = 595,553,294,295.86
  5. Step 5: Solve for x
    x = 595,553,294,295.86/840,135.21
  6. Step 6: Final answer
    x = 708,877.91

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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.