Home / 848,345.40-1,272,080.70-315,592.20

Finding the Fourth Proportional to 848,345.40, 1,272,080.70 and 315,592.20

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Solution

The fourth proportional to 848,345.40, 1,272,080.70 and 315,592.20 is: 473,225.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,345.40 : 1,272,080.70 = 315,592.20 : x
  2. Step 2: Convert to fraction form
    848,345.40/1,272,080.70 = 315,592.20/x
  3. Step 3: Cross multiply
    848,345.40x = 1,272,080.70 × 315,592.20
  4. Step 4: Simplify right side
    848,345.40x = 401,458,746,690.54
  5. Step 5: Solve for x
    x = 401,458,746,690.54/848,345.40
  6. Step 6: Final answer
    x = 473,225.58

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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.