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Finding the Fourth Proportional to 1,118,934.81, 1,678,413.76 and 895,714.10

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Solution

The fourth proportional to 1,118,934.81, 1,678,413.76 and 895,714.10 is: 1,343,580.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,934.81 : 1,678,413.76 = 895,714.10 : x
  2. Step 2: Convert to fraction form
    1,118,934.81/1,678,413.76 = 895,714.10/x
  3. Step 3: Cross multiply
    1,118,934.81x = 1,678,413.76 × 895,714.10
  4. Step 4: Simplify right side
    1,118,934.81x = 1,503,378,866,128.71
  5. Step 5: Solve for x
    x = 1,503,378,866,128.71/1,118,934.81
  6. Step 6: Final answer
    x = 1,343,580.39

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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.