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Finding the Fourth Proportional to 517,488.20, 776,232.30 and 358,055.90

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Solution

The fourth proportional to 517,488.20, 776,232.30 and 358,055.90 is: 537,083.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,488.20 : 776,232.30 = 358,055.90 : x
  2. Step 2: Convert to fraction form
    517,488.20/776,232.30 = 358,055.90/x
  3. Step 3: Cross multiply
    517,488.20x = 776,232.30 × 358,055.90
  4. Step 4: Simplify right side
    517,488.20x = 277,934,554,785.57
  5. Step 5: Solve for x
    x = 277,934,554,785.57/517,488.20
  6. Step 6: Final answer
    x = 537,083.85

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.