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Finding the Fourth Proportional to 715,446.68, 986,329.76 and 570,743.49

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Solution

The fourth proportional to 715,446.68, 986,329.76 and 570,743.49 is: 786,838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,446.68 : 986,329.76 = 570,743.49 : x
  2. Step 2: Convert to fraction form
    715,446.68/986,329.76 = 570,743.49/x
  3. Step 3: Cross multiply
    715,446.68x = 986,329.76 × 570,743.49
  4. Step 4: Simplify right side
    715,446.68x = 562,941,290,940.12
  5. Step 5: Solve for x
    x = 562,941,290,940.12/715,446.68
  6. Step 6: Final answer
    x = 786,838.91

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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.