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Finding the Fourth Proportional to 715,407.57, 986,275.95 and 570,704.49

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Solution

The fourth proportional to 715,407.57, 986,275.95 and 570,704.49 is: 786,785.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,407.57 : 986,275.95 = 570,704.49 : x
  2. Step 2: Convert to fraction form
    715,407.57/986,275.95 = 570,704.49/x
  3. Step 3: Cross multiply
    715,407.57x = 986,275.95 × 570,704.49
  4. Step 4: Simplify right side
    715,407.57x = 562,872,113,044.02
  5. Step 5: Solve for x
    x = 562,872,113,044.02/715,407.57
  6. Step 6: Final answer
    x = 786,785.23

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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.