Home / 847,223.40-1,270,835.10-427,319.40

Finding the Fourth Proportional to 847,223.40, 1,270,835.10 and 427,319.40

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Solution

The fourth proportional to 847,223.40, 1,270,835.10 and 427,319.40 is: 640,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,223.40 : 1,270,835.10 = 427,319.40 : x
  2. Step 2: Convert to fraction form
    847,223.40/1,270,835.10 = 427,319.40/x
  3. Step 3: Cross multiply
    847,223.40x = 1,270,835.10 × 427,319.40
  4. Step 4: Simplify right side
    847,223.40x = 543,052,492,430.94
  5. Step 5: Solve for x
    x = 543,052,492,430.94/847,223.40
  6. Step 6: Final answer
    x = 640,979.10

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Double scale
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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.