Home / 971,390.40-1,457,085.60-770,623.80

Finding the Fourth Proportional to 971,390.40, 1,457,085.60 and 770,623.80

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Solution

The fourth proportional to 971,390.40, 1,457,085.60 and 770,623.80 is: 1,155,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    971,390.40 : 1,457,085.60 = 770,623.80 : x
  2. Step 2: Convert to fraction form
    971,390.40/1,457,085.60 = 770,623.80/x
  3. Step 3: Cross multiply
    971,390.40x = 1,457,085.60 × 770,623.80
  4. Step 4: Simplify right side
    971,390.40x = 1,122,864,841,997.28
  5. Step 5: Solve for x
    x = 1,122,864,841,997.28/971,390.40
  6. Step 6: Final answer
    x = 1,155,935.70

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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.