Home / 810,547.34-1,215,845.60-278,060.70

Finding the Fourth Proportional to 810,547.34, 1,215,845.60 and 278,060.70

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Solution

The fourth proportional to 810,547.34, 1,215,845.60 and 278,060.70 is: 417,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,547.34 : 1,215,845.60 = 278,060.70 : x
  2. Step 2: Convert to fraction form
    810,547.34/1,215,845.60 = 278,060.70/x
  3. Step 3: Cross multiply
    810,547.34x = 1,215,845.60 × 278,060.70
  4. Step 4: Simplify right side
    810,547.34x = 338,078,878,627.92
  5. Step 5: Solve for x
    x = 338,078,878,627.92/810,547.34
  6. Step 6: Final answer
    x = 417,099.49

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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.