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Finding the Fourth Proportional to 778,565.76, 1,167,485.76 and 404,488.32

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Solution

The fourth proportional to 778,565.76, 1,167,485.76 and 404,488.32 is: 606,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,565.76 : 1,167,485.76 = 404,488.32 : x
  2. Step 2: Convert to fraction form
    778,565.76/1,167,485.76 = 404,488.32/x
  3. Step 3: Cross multiply
    778,565.76x = 1,167,485.76 × 404,488.32
  4. Step 4: Simplify right side
    778,565.76x = 472,234,353,686.32
  5. Step 5: Solve for x
    x = 472,234,353,686.32/778,565.76
  6. Step 6: Final answer
    x = 606,543.95

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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.