Home / 858,413.10-1,287,619.65-297,504.30

Finding the Fourth Proportional to 858,413.10, 1,287,619.65 and 297,504.30

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Solution

The fourth proportional to 858,413.10, 1,287,619.65 and 297,504.30 is: 446,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,413.10 : 1,287,619.65 = 297,504.30 : x
  2. Step 2: Convert to fraction form
    858,413.10/1,287,619.65 = 297,504.30/x
  3. Step 3: Cross multiply
    858,413.10x = 1,287,619.65 × 297,504.30
  4. Step 4: Simplify right side
    858,413.10x = 383,072,382,639.50
  5. Step 5: Solve for x
    x = 383,072,382,639.50/858,413.10
  6. Step 6: Final answer
    x = 446,256.45

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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.