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Finding the Fourth Proportional to 647,130.80, 970,696.20 and 610,389.20

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Solution

The fourth proportional to 647,130.80, 970,696.20 and 610,389.20 is: 915,583.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,130.80 : 970,696.20 = 610,389.20 : x
  2. Step 2: Convert to fraction form
    647,130.80/970,696.20 = 610,389.20/x
  3. Step 3: Cross multiply
    647,130.80x = 970,696.20 × 610,389.20
  4. Step 4: Simplify right side
    647,130.80x = 592,502,476,961.04
  5. Step 5: Solve for x
    x = 592,502,476,961.04/647,130.80
  6. Step 6: Final answer
    x = 915,583.80

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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.